Customizable thing holders for a square peg board

This is a generator for some simple square board mounts, holders, bins and shelves, and some examples along with it. Use your imagination to make some more.
Joints are from https://www.thingiverse.com/thing:5020142 , cheers.

Update 2023-12-17:
Make the steps mode faster by removing unnecessary hull volume and arcs.

Update 2023-12-16:
Update this generator from parametric holder v2, add longitudinal steps mode, fix some bugs.