I don't own an AirTag, and I have noone nearby that have an AirTag so I haven't been able to test a real one it in the opener.
The bottle opener is a variant of my previous published models
https://www.printables.com/model/136276-bottle-opener
I have provided AirTag_Bottom_TEST which is quite fast to print and to see if the AirTag fits, then it should be alright to print a Bottle Opener of your choice.
The AirTag should be pressed in to the opener with a snap-sound!
Please let me know if I have to do adjustments.
For the bottle opener I use 100% infill for strength.
Layer height 0.2
The author marked this model as their own original creation.