This is my guard bot Reggie, he is 100% recycled. I made him from a refrigerant bottle I found some where and a ton of other random parts I had laying around.
He doesn't move but is more of a sculpture.
He has 2 yellow LEDs for eyes behind a sawed off piston, and a 7 color changing LED in his gun. By pressing a button in the back he can toggle between each solid color or a loop of all colors.