My bank does not issue traditional checkbooks, they simply print the checks on sheets of paper. So, I was looking for a solution to condense them and keep them in a convenient place. After not finding what I wanted, I put this model together. It's designed to fit a few dozen standard 6" x 2.75" (152mm x 70mm) personal checks and there are holes at the top to mount it. I used push pins to mount the holder to a bulletin board, though nails or small screws should also work. Note that you can't fit the push pin head through the hole, you have to insert the pin through the hole to then attach it to the wall. I printed on A1 Mini with basic PLA.

Enjoy!