This is a print in place clothespin/clip is great for holding a chip bag closed. It could also glue a magnet to the back and use it to clip things to the fridge.

It prints great in PLA so that it is flexible and sturdy. It should take less than an hour on most printers. It only took me 30 min.

The gap between the grips is .2 mm. It should print fine on most printers, my ender 3 v3 SE handled it well, but you might have to dial in your settings if you have issues.