Boing Boing, one of my favorite blogs, recently had a post about a very distinct online shop. Inventables is a cornucopia of cool stuff. You can get anything from heat-resistant gel to rubberish magnets. If you’ve got a DIY spirit, or are just a geeky child at heart, I bet you can find dozens of things to percolate your imagination juices.
You can buy hardware store materials of the future from these folks: Translucent concrete, rubber glass, unwetable sand, suction cup tape, etc. They primarily sell small quantities of very innovative stuff, but will work with you if you like what you tried and want it in bulk. The materials and devices are so amazing you’ll invent things just to use them.