Here is a working 1/10th scale model of the classic Igloo Little Playmate Cooler. 

Link to the real thing I used for inspiration for this project: https://www.igloocoolers.com/products/ecocool-little-playmate-cooler 

Model Info

The cooler comprises three main parts: the body, an insert, and the lid (with its own insert). The colored insert on the lid handle is a separate STL only so that color paint depth can be more easily controlled in the slicer to limit color bleed through the white lid. I do not advise printing the lid insert all by itself, print it in place with the lid so the filament is joined together permanently.

Printing with the included 3MF file

The included 3mf file is for the Bambu Lab X1 Carbon with a 0.2mm nozzle and is pre-painted with supports included. There are two prints to complete this cooler. Print one is a multicolor print of the lid and print two is to create the body and the insert sequentially to limit waste from filament swaps. Easy-to-remove supports have been included with the model and they have proven successful for me so far in my testing. (18 coolers printed so far from the beginning of this project)

Assembly

Once all three parts are printed and supports are successfully removed, follow these steps to assemble the cooler. First, slide the white insert into the body of the cooler. This should be a snug fit that keeps the insert in place without the need for glue. Next, as seen in the included pictures, gently snap the lid onto the cooler body ensuring the holes line up. Lastly, open your cooler and enjoy your creation.

As seen in the last picture, many hours of design work and print iterations (14 versions to be exact) went into creating this model to get the fits, form, and functions correct. If you enjoy the project, please post a picture of your make as I would love to see what you come up with. Feel free to leave a comment with any questions or suggestions for this or any other models. Enjoy!