Cascade Wallet (4-card with paper/cash slot)
I like the concept of cascade wallets but couldn't find one that quite fit what I wanted.
This one can hold up to four cards (or 3 plus ID), and has a full length pocket on the back for papers like insurance cards and a couple bills.
My intent was to keep it as slim and compact as feasible so the lever arm is a bit small.
Print without support. Gently pop the front lever loose then push on the internal lever/spreader arm to loosen the mechanism. It may take a few swings to feel smooth.
The clearances are 0.2mm, I've been successful printing it in PLA, ASA, and PETG on a BAMBU X1, and in PLA on a Prusa Mini so far.