Per Cymon's suggestion (comments, parent work), split each in half (was that the correct half to cut?) leaving four identical parts, not just two.Print and play!Quoting LeftAngle's parent work: "The idea is to make the 2 pieces into a pyramid. It can be done, but it's not as easy as you might think. A great ice breaker."I'll add that it's fun to find the right arrangement but not exactly stable in that arrangement, unless you have a little channel to permit it to stand on edge. So I've made such a thing. An equilateral triangle base would work too, but I like the drama of the higher center of gravity.