Only use this at private parties with no fixed end time and I know the audience.

The dancing is over. Everybody a little over-refreshed, standing around having incoherent chats.

All lights off.
Smoke the room up.
Start Mike Koglin - The Silence (Matt Darey Tekara 2009 remix). The one with the unpromising Amen Break loop intro.
Generate liguid sky with my old-school custom made green laser.

Trance bliss!