Valve stem caps that blink when your pressure is low
 

A very neat, little device that blinks when your tire pressure falls below a level that you set when you install them.

This would be a pretty neat thing for the hardcore overinflator. If anyone buys them, do post about them: http://www.terrapass.com/Merchant2/m...duct_Code=TA-4

:turtle:

Nice that you can adjust them for any pressure you want to run but that a little to high dollar for me. :p