I was inspired by the T-shelves
by J1 Studio- beautiful modal furniture that looks great and is held together by zip ties.
This is really take two- I did a paper prototype of this yesterday (http://www.instructables.com/id/Rapid-Prototyping-with-Paper-T-Shelves/). But after messing around with my little triangles-and-squares glued together model, I had to admit to myself that something was structurally wrong with my model. So I went back to the website and, with the help of my friends, realized how it was really supposed to be done! It's not tiny squares and triangles; it's bigger triangles with slots to fit them together!
I've really been enjoying working with the easy geometric shapes, so I thought I'd make a step-by-step so you could play along.