I've recently discovered Icehouse games. Unfortunately, I don't have my pyramids with me while visiting family over the holidays. I had to improvise when I wanted to show the games to relatives, so I created a stackable pyramid template in Macromedia Freehand that only requires 5 folds & needs no glue or tape to stay together.
The PDF file contains 4 pages, one for each color (red, yellow, cyan & green). Each page contains 15 pyramids (5 of each size). Please feel free to use this file as you see fit. They are very handy when plastic pyramids aren't available.
Have a great holiday season!
Something to write home about. Just $16.99/mo. or less