Wanna spice up your bathroom/kitchen/garage/anywhere you have a faucet?  How 'bout throwing an LED into your faucet?  This self-powered LED faucet head will shine different colors depending on the temperature of the water:  
- Below 32 C = Green 
 - 33 C to 41 C = Blue 
 - 42 C to 45 C = Red
 - Over 45 C = Flashing Red