the mirror ball is a constantly riveting effect that actually produces very little light besides the minute beams that travel around the spa area of the two level deck in the furthermost corner of the back yard. Beams of refracted light dance all over...and if someone you don't care for comes to visit and drinks too much, all you have to do to make them upchuck is hit the mirror ball. It's practically instant as the beams dance crazily, rendering the offending party disoriented and nauseous.

Be sure to have the hose handy.