Thin wallet gang. I carry four cards in a 3D printed sleeve which is two walls (0.8mm) thick. When my state implements digital drivers licence I can take that

Thin wallet gang. I carry four cards in a 3D printed sleeve which is two walls (0.8mm) thick. When my state implements digital drivers licence I can take that down to three cards. I just realised an elastic "card sock" would be even easier.