This year our Halloween theme was "Battle of the Rock Bands"! If for no other reason than to have an excuse to play video games at work!
We decided to use the same storage closet that we turned into a Disco a few Halloweens back, and turn it into a club. (We also reused the disco floor as part of the stage.) I built some scaffolding out of PVC and a lighting system for it. Here a short video testing the lights:
Scaffolding construction from PVC:
Spray painted with chrome spray paint: