Trinity Toy [Kaleidocycle] Known as a Kaleidocycle, or Flexahedron, the toy was invented years ago by a bored mathematics student. It goes together quickly, and can keep you happily fidgeting with it for hours. Best of all, it’s free. [Hat Tip to Sarah B!] (tags: trinity art craft cool origami paper papercraft) previousEvening Passed & Morning CamenextPlay-Doh Animation