This is the smallest polyhedron vertex I could print cleanly and with a nice, "crisp" snap.
I noticed people were scaling down things http://www.thingiverse.com/thing:4893 and http://www.thingiverse.com/thing:4934, and I wanted to see how fine I could go. I modified the snap to be satisfyingly strong, but use less plastic, so this piece is not simply a scaled down version of either of the above things, and has a modified snap design.
The design is optimized for my MakerBot's flaws and SkeinForge settings. For instance, the overhangs are exaggerated because MakerBot undershoots those fine details. A minimal raft-like structure was added to the tray to deal with warping ( even on hot, sanded kapton ).
The great thing is you can print 12 (16?) at a time on the MakerBot, so it won't take weeks to print up enough pieces for complex forms.
see http://www.thingiverse.com/thing:4893 and http://www.thingiverse.com/thing:4934 for more details.
Look up Archemedean polyheda designs on Wikipedia or Mathworld, or just play and see what you can make. Sorry, just triangles for now.