For a fantasy setting, see if you can get away with turning off all electric lights and get by with candles, lanterns and torches – or use flashlights as “torches”, if you would like to minimize the fire risk. If you’ve managed to loan a decent stereo, see if you can scrounge up some more speakers, as well friend who’s into multichannel surround sound. Rig up a decent sound system at your physical location. Again, dresses to rent for rent…