Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:4837318.

This is a AirTag holder that is print in place. No assembly required! It is designed using an AirTag model based upon Apple's dimensions of 31.9mm X 8mm and photos available since the announcement.

This has been successfully printed and tested using a 0.1mm layer height. A 0.15mm layer height should also work, but I expect that a 0.2mm layer height could prevent the hinge from working.

For a more refined AirTag keyring case, check out my AirTag Twist-Lock keyring case on MyMiniFactory: https://www.myminifactory.com/object/3d-print-airtag-keyring-twist-lock-case-167136