1. RGB Light (bedroom)Place a brick inside the light in the bedroom, wrench it, set it's light to RGB, and then voila.
2. Spinny tool
Place a brick, press and hold numpad 5 for a long time until you can't hear the brick anymore, and then use numpad 7 to spin your tool around. (e.g. take out your wand and spin it around for people's entertainment)