This is my case for adding an Apple AirTag to my Dango Wallet.

It is designed so that the AirTag sits as flat as possible on the wallet.

Should fit to any wallet which has an free and open credit card pocket on the outside.

Anycubic

All-metal Mega

Yes

On FDM printers, this case should be printed upright, with the thick side on the printing plate. Supports and brim should also be used here.
On SLA printers, it is best to tilt the case by 45° and lift it by at least 5mm, then only use supports from the printing plate.