Apple Air Tag - Key ring replacement
The wife bought a handful of air tags and added them to all family members keys. I found it too big and bulky with the default silicon flappy tag thing, so I thought for a few minutes "How can I still use this air tag but have it take up less/no extra space" then decided it should be easy enough to make the air tag BE the key ring... First version, here. First print worked perfectly. Tons of room for improvement I'm sure, so do your worst.
Should go without saying, but I strongly advise printing with TPU (or other soft filament) as it needs to stretch a bit to initially insert the airtag.
I used supports, automatically generated in PrusaSlicer, but if I printed again I think I would manually paint on supports as it didn't need nearly as much as the slicer added.
The pictured print was printed at my own TPU "draft" speeds (40mm) at 15% infill, although infill really isn't needed as there's very little to really fill. No other advised print settings, its a pretty basic print.