I designed this low profile card holder for a familyboard in our kitchen. can be used for membership, credit or giftcards. Other design i found where quite bulky and didn't suit my needs. This holder is stirdy, holds cards on one side. Cards can be inserted horizontally or vertically. Vertically works best.

Screw holes need a tiny bit of support to come out nice. I've added a brim to avoid warping because of the shape.