French cleat book holder

I made this small holder for my french cleat wall to hold a small book or use it as a hanger for a bag for example.

It hooks onto the top of a 45° cleat that can be ~6cm high. There is a small ledge at the bottom too to secure it a bit.

Can be printed standing up with supports only needed for the main 45° edge. I used tree style supports in PrusaSlicer and printed it with my Prusa Mini.