Costco Cart Tray

Version 2 available now! -  https://makerworld.com/en/models/2093990-costco-cart-tray-v2?from=search#profileId-2263868 (Version two fixes the clip strength issue, makes the supports easier to remove, and much more!)

Child-facing version available here! - https://makerworld.com/en/models/2977434-costco-cart-v3-child-facing-design#profileId-3340114 

If you love shopping at Costco, you'll appreciate this 3D-printed shopping cart tray. It's designed to securely clip onto the newer Costco shopping carts (cart measurements taken in northern California) and give you a space to set down your Costco hotdog, soft drink and free samples. In addition to the tray and cup holder, there's a space for an alligator clip to hold your Costco membership card, receipt or shopping list. 

Note: This is my own design but was originally inspired by TheIdeaDad. Many thanks to him for the clever idea and giving his OK to share my iteration.

I purchased “Metal Wire Alligator Clamp Long-Tailed Alligator Iron Clip Clasp for DIY Card Clip Holder 6 inch (150mm)” from Amazon.

I used super glue (cyanoacrylate) to attach the phone holder to the tray.

For  a commercial license to sell my 3D prints - https://www.patreon.com/c/kevlar_777_/membership