A snapping panel to make boxes of any sizes or anything you like.
I saw the concept on YouTube long time ago and I think those were triangular if I remember correctly. (Added later: those are polypanels by Make Anything https://www.youtube.com/watch?v=6RamWwngvKg)
Supports are not needed.
Can also make other things/shapes with those.
module.stl | 48.7KB |