While educational toy geometry kits are fine, it is also possible to find affordable ready-made icosahedra – sometimes in unusual places.
For example, I found a rubbery icosahedron at a pet store. It was a dog toy with a soft ball in the center. I just removed the ball and bingo – a light and durable ico model!
I have also found several different skeletal icosahedra in hobby stores that sell inexpensive decorative items, such as Hobby Lobby and Michael’s. The gold model in the illustration is one example. I also have a smaller black wire ico, as well as one in white china.
When I have trouble visualizing a spatial scale, I refer to these models. Find out how I use these in the upcoming MoveScape Center workshop, “Harmonics of Space.”