I wanted to carry my NotePin on my keychain but I was worried it would get scratches - so I modeled a TPU case to protect it.
There are four variations:
I created the open version after I had trouble getting the half-open one to print properly (first time playing around with TPU…) and this is the one pictured in the images.
Additionally, I've uploaded the f3d file to allow further modifications. If you want to try and make this even slimmer, there's a parameter named Shell_Thickness you can play around with.
The author marked this model as their own original creation.