Silly Putty Version 2.0

Everything that's cool these days is Version 2.0, have you noticed?

Now comes Crazy Aaron with his Thinking Putty.

A short while back the patent on Silly Putty expired.

Crazy Aaron took the basic recipe and added all sorts of colors and effects including temperature-based color change.

If you just want a big chunk of the good old stuff but don't want to pay a fortune, visit this site.

The technical name for the original substance, by the way, is Dow Corning Dilatant Compound 3179.

[via Kevin Kelly's Cool Tools]