A clip for your Chips ... or other snacks. I'd suggest printing with TPU but any semi-flexible filament should work.

This design was inspired by https://www.thingiverse.com/thing:1212828/files

This is my second attempt first, the one did not work :/ Beefed up the back spring and added a counter spring. Working on a third design with my nephew (9yrs) to improve the spring and show him how designs can be improved and from version to version