I needed an ID card holder for two cards at my work, and I didn't like any I found, so decided to design my own, as thin as I could. I've printed in PETG because sometimes I need to keep the cards in the car, so would handle better with the heat, but you can print it in PLA. Will even be easier to remove the supports. I find out the supports I've used worked well to remove. The fit is thigh, so will better if you calibrate you filament prior the printing.
Hope you enjoy it.
The author marked this model as their own original creation.