Rubik's Cube Puzzle Stand

I have an assortment of Rubik's Cube puzzles. The newer ones come with a shnazzy little plastic display stand which props the cube up for display. However the older puzzles did not come with this, so I wrote a simple one using OpenSCAD so I could print a few and display my entire cube collection in style. I've also included my source in case somebody wants to modify or use my pyramid module.