The poor man's 3D printer

Making games involves building prototypes, and so far I have made do by using blank cards (or printing them out), scavenging components from other games, or pulling stuff from my growing collection of game bits.  Matt Leacock, the designer of loads of great games, including Pandemic and Roll Through the Ages, as well as the currently-on-Kickstarter Thunderbirds board game, has written an inspiring blog post about using craft foam.

Stolen from Matt's blog: a fine example of sculpting craft foam into Thunderbird tokens.

He waxes lyrical in his post about the advantages of using this not-too-expensive material.  Aside from the sculpting potential (see the picture for neat Thunderbirds prototype components), I'm rather sold on the idea of using this stuff for making up tiles: print out what you want on regular paper, back with self-adhesive craft foam, then cut up with a sharp knife.  I'm definitely going to be trying this trick out...