Costco is already shifting heavily into fall and holiday mode, and September is bringing everything from viral seasonal décor to new kitchen finds and limited-edition foods. Some are already showing signs of disappearing faster than others, while a few new arrivals are worth waiting on.

1. 4.5-Foot Whimsical Pre-Lit Tree – $69.99

This quirky leaning Christmas tree is quickly becoming one of Costco’s biggest early holiday hits. Shoppers have nicknamed it the “Grinch Tree” because of its curved shape and whimsical ornament hanging from the tip.

• Size: 4.5 feet tall.
• Lighting: Includes 150 LED lights.
• Why fans want it: Its unusual shape makes it stand out from traditional artificial trees.
• Buzz: One of the strongest social-media performers among Costco’s current holiday arrivals.
• Stock watch: A significant number of reporting warehouses are already showing low inventory or sellouts.
• Best for: Entryways, kids’ rooms, apartments or anyone wanting a second decorative tree.

The original Costco spotting also described it as brand new and already “going viral.”

2. Jones Soda Fallout Nuka-Cola Vault-Dweller Variety Pack – About $19.99

Costco has tapped directly into gaming fandom with this Fallout-inspired Jones Soda variety pack.

• Price: Generally around $19.69 to $20.29 depending on warehouse.
• Why it’s interesting: It’s as much a collectible as it is a beverage purchase.
• Best for: Fallout fans, gamers and collectors.
• Stock watch: Distribution appears much more limited than most mainstream Costco drinks.
• Why to grab it: Collectible collaborations can disappear without much notice once the initial inventory is gone.

This is one of the strongest candidates for a true “buy it when you see it” September find.

3. Denmark 6-Quart Cast Iron Bean Pot – $49.99

This surprisingly affordable cast-iron pot has become one of Costco’s more interesting new kitchen finds.

• Capacity: 6 quarts.
• Material: Cast iron.
• Great for: Beans, chili, soups, stews, braised meats and slow-cooked meals.
• Why it stands out: $49.99 is aggressive pricing for a substantial pre-seasoned cast-iron cooking vessel.
• Stock watch: Some reporting warehouses are already showing the item unavailable.

For fall comfort-food cooking, this may end up being one of September’s sleeper hits.

4. MIU 3-Piece Wood Fiber Cutting Board Set – $27.99

Costco’s MIU cutting-board set is getting attention because it offers a non-plastic alternative without the maintenance associated with traditional solid-wood boards.

• Includes: Three cutting boards in different sizes.
• Material: Wood-fiber composite.
• Helpful feature: Non-slip feet are located on both sides, allowing either cutting surface to be used.
• Why fans like it: Thin, sturdy design with the feel of a more premium kitchen product.
• Value: Comparable wood-fiber sets can cost substantially more elsewhere.
• Stock watch: A large number of warehouses are already reporting low inventory.

5. Mesa 2-Tier Organizer With Sliding Drawers – $29.99

Costco is leaning heavily into storage and organization this fall, and this compact Mesa organizer is one of the more versatile additions.

• Design: Two-tier metal organizer.
• Features: Sliding drawers and wood-look handles.
• Best uses: Under the kitchen sink, bathroom vanity, office or pantry.
• Why it’s useful: Its smaller footprint makes it easier to fit into tight cabinets.
• Stock watch: A noticeable portion of reporting warehouses are already low or sold out.

This isn’t necessarily the cheapest organizer available anywhere, but inventory data suggests shoppers are actually buying it.

6. Kirkland Signature Semi-Sweet Chocolate Chips 4.5-Lb Bag – About $13.99

Technically this is a returning favorite rather than a completely new product, but its comeback is big enough to include.

• Size: Huge 4.5-pound bag.
• Best for: Cookies, brownies, muffins, pancakes and holiday baking.
• Why fans care: Kirkland’s chocolate chips disappeared previously, leaving plenty of Costco bakers disappointed.
• Value: Buying in bulk can make sense for anyone baking regularly through fall and the holidays.
• Buzz: The return has generated unusually strong Costco-community reaction.

If you’ve been waiting for Kirkland chocolate chips to return, there’s little reason to gamble on them sticking around indefinitely.

7. 7.5-Foot Pre-Lit Flocked Micro-LED Christmas Tree – $299.99

Costco already has full-size Christmas trees taking over floor space, including this less-expensive flocked option.

• Height: 7.5 feet.
• Lights: Approximately 1,150 micro LEDs.
• Finish: Frosted/flocked branches.
• Why it stands out: Gives shoppers the snowy look without moving into Costco’s $400+ tree range.
• Alternative: Costco is also carrying a more expensive 7.5-foot tree with roughly 1,850 lights.
• Savings: Roughly $150 less than that higher-end option at the prices spotted.

8. Owala SmoothSip Slider 20-Oz Tumblers 2-Pack – $34.99

Owala continues to have an extremely loyal fan base, making Costco multipacks worth watching whenever new colors appear.

• Includes: Two 20-ounce insulated tumblers.
• Feature: SmoothSip Slider lid.
• Why Costco works: You get two Owala tumblers bundled together rather than purchasing them individually.
• Social buzz: Shoppers have been sharing Costco sightings and asking others to report availability.
• Stock watch: Several warehouses are already reporting low inventory.

Color combinations can also vary, which often creates even more demand among Owala collectors.

9. Kirkland Signature Pumpkin Streusel Muffins, 8 Count – $6.99

Pumpkin season has officially arrived in Costco’s bakery.

• Quantity: Eight muffins.
• Flavor: Pumpkin muffin topped with streusel.
• Best for: Breakfast, coffee breaks or easy fall entertaining.
• Why to grab them: Costco bakery’s seasonal products rotate quickly.
• Good to know: This is a seasonal return rather than an entirely new Costco creation.

These are exactly the type of Costco bakery item that can suddenly disappear as the warehouse moves closer to Thanksgiving and Christmas.

10. Doughlicious Chocolate Chip Cookie Dough & Gelato Bites – About $9.89

These frozen bites combine two desserts into one very snackable package.

• What they are: Gelato wrapped in cookie dough.
• Flavor: Chocolate chip cookie dough.
• Where to look: Costco’s freezer section.
• Why they’re interesting: The product began showing up at Costco very recently and still appears to have relatively limited distribution.
• Best advice: Grab them when spotted rather than assuming every warehouse carries them.

11. Kirkland Signature Pumpkin Bar Cake – $16.99

One of Costco bakery’s biggest September newcomers combines a classic bar-cake format with fall’s dominant flavor.

• Flavor: Pumpkin-forward seasonal cake.
• Price: $16.99 at recent sightings.
• Why fans are watching: Costco’s oversized seasonal desserts regularly become social-media favorites.
• Best for: Fall parties, tailgating or feeding a crowd.
• Stock situation: Unlike several items on this list, it currently appears widely available.

So while this deserves a spot among September’s noteworthy finds, don’t panic-buy it yet simply because people are talking about it.

12. Mini Pain au Chocolat, 20 Count – $9.99

Costco’s bakery is also leaning French with these miniature chocolate-filled pastries.

• Quantity: 20 pieces.
• Cost per pastry: Roughly 50 cents each.
• Best for: Breakfast, brunch, coffee or quick desserts.
• Serving tip: Warm them briefly before serving for a softer pastry and melted chocolate center.
• Stock situation: Currently much easier to find than the genuinely scarce products near the top of this list.

13. Sunshine Buns Cinnamon Rolls, 10 Count – About $14.99

Another bakery item worth watching is this package of large cinnamon rolls.

• Quantity: 10 rolls.
• Price: Around $14.99 to $15.99 depending on location.
• Why they’re interesting: Distribution still appears fairly limited.
• Best for: Weekend breakfast or feeding a crowd.
• Stock advice: This is more of a “grab them if your Costco gets them” item than a nationwide sellout story.

14. Keurig K-Mini Mate Plus Costco Bundle – $99.99

The newest Keurig at Costco is designed for shoppers who want a coffee maker without sacrificing much countertop space.

• Width: Only about 5 inches.
• Reservoir: Approximately 50 ounces.
• Why it’s different: The reservoir sits toward the back to maintain the narrow footprint.
• Costco bundle: Includes the brewer plus six K-Cup pods, a water filter and filter handle.
• Why Costco: The warehouse price spotted was below the comparable Walmart price while including additional accessories.

15. BirdRock Home Artisan Serving Boards 2-Pack – $18.99

Charcuterie season is coming, and Costco’s new BirdRock serving-board pack looks positioned perfectly for fall and holiday entertaining.

• Includes: Two serving boards.
• Sizes: Approximately 16 inches and 14 inches.
• Best for: Cheese, meats, appetizers, desserts and holiday displays.
• Why it’s a deal: Costco bundles two boards for less than comparable single BirdRock boards have been selling elsewhere.
• Gift potential: An easy item to split into two separate gifts.

5 Costco Items to Avoid or Wait On

Not every shiny new Costco product is automatically a warehouse bargain. These five are worth comparing or waiting for before loading them into your cart.

1. Bergner 16-Quart Stainless Steel Stockpot – $64.99

The pot itself isn’t necessarily the problem. The current price is.

• Capacity: 16 quarts.
• Why wait: Comparable stockpots from established brands can be found in the same general price range.
• Inventory: Stock appears plentiful, so there isn’t much evidence you need to rush.
• Costco strategy: Seasonal cookware frequently gets marked down if inventory remains high.
• What to watch for: A clearance price ending in .97.

Verdict: WAIT.

2. Ninja CRISPi DualZone Glass Air Fryer – $299.99

This is undeniably interesting technology—but $300 is a serious premium.

• Design: Dual glass cooking containers.
• Feature: Smart Finish can coordinate two foods so they finish cooking together.
• Bonus: The glass cooking containers can double as food-storage containers.
• Main issue: Ninja sells other dual-zone models with similar smart-cooking functionality for significantly less.
• Who might still want it: Shoppers specifically trying to reduce cooking in plastic-coated baskets.

Verdict: WAIT FOR A SALE unless glass baskets are especially important to you.

3. Cangshan Teton 14-Piece Knife Block Set – $169.99

Cangshan makes attractive knives, but not every home cook needs to spend nearly $170 on a knife block.

• Includes: 14 pieces.
• Why hesitate: Less-expensive knife sets are readily available.
• Inventory: Currently doesn’t appear scarce enough to justify rushing.
• Best for: Shoppers specifically wanting Cangshan rather than simply needing a basic kitchen knife set.

Verdict: HOLD unless you’re specifically shopping for Cangshan.

4. BirdRock Home Metal Toilet Paper Storage – $19.99

This is the reminder that Costco isn’t automatically the cheapest place for everything.

• Purpose: Decorative enclosed toilet-paper storage.
• Why skip it: Similar storage products can be found for less at mass retailers.
• Inventory: No major shortage signals.
• Comparison: A similar Walmart version was spotted around $12.79.
• Difference: That’s roughly $7 less than Costco’s price.

Verdict: SKIP at $19.99.

5. Ninja Crush IQ 72-Oz Blender – $79.99

The newest model may look appealing, but warehouse shoppers should compare before buying.

• Capacity: 72 ounces.
• Feature: Auto-iQ automatically adjusts blending patterns.
• Why wait: Comparable Ninja Auto-iQ blenders have recently been offered for less elsewhere.
• Comparison: A similar 72-ounce Ninja model at Sam’s Club was approximately $20 cheaper.
• Inventory: There doesn’t appear to be enough scarcity to justify paying the higher price immediately.