Icehouse_printable.pdf (2.21 MB) (Log in or Register to download.)
Print to cardstock, score, fold, and glue. Includes a blank set (1 page of 15 pyramids to decorate yourself or to print to colored cardstock) and a set based on classical elements. (Air, Earth, Fire, Water, Aether, Void)
Yes, they're stackable, since they only have the four triangular faces and no bottoms. Sometimes, stacked pyramids will stick together a bit, but not badly - only to the extent that you might need two hands to separate them.
