Turn your Magic Band v2 bracelet into a sturdy keychain.

1.) 3D print this keychain using PETG, 90%+ infill (solid), <= 0.15mm layer height, and no supports. Orient the "face" of the keychain toward the bed, and the "back" upward. I used a textured heat bed sheet, which left a nice texture on the "face".
2.) Use a Phillips #000 ("triple zero", AKA very small) screwdriver to remove the two screws and backplate from the Magic Band v2 bracelet.
3.) Remove the RFID puck from the bracelet and put it into the 3D printed keychain.
4.) Attach the original backplate and screws to the 3D printed keychain.
NOTE: For me, the tiny screw holes in the printed part were open enough to get the screws in. If they aren't for you, perhaps heat a small pin or thin wire, and poke them open?