I am a strange person.
My father is a pilot, has been almost his entire life. Spent quite some time in the Air Force, and collected some kewl nick-knacks. Fatigues, hats, all kinds of sturf. A few of the kewlest things were a pair of massive headphones and a full-on fighter pilot type helmet, with the visor, air supply tube and everything. The thing was, the headphone plugs were designed for fighter jets, not civilian sound equipment. So I got some electrical tape, old headphones, and tin foil and carefully cut, wrapped and twisted some super-crude adapters. Now I have a nice, big, cushioned pair of stereo headphones with a big ol' air-traffic-controller style microphone, and a helmet with microphone, visors, and (unfortunately mono) built-in speakers. Plus, the little air-supply mechanism makes a neat Darth-Vader-esque noise.
My other feat of acoustic redneck engineering is my 8.1 surround sound. I have a crappy set of stereo speakers that crackle off and on, a $20 Wal-Mart 4.1 set of speakers, and a set of those big mid-eighties hi-fi speakers. I cobbled all of those together using about ten different adapters, a VCR, and some nice software included with my motherboard. Now, with their combined volumes, I have enough sheer power to level my house.