The speech jammer – hearing your own voice through headphones with a short delay of about 100ms. This confuses your brain, and results in a hilarious effect. There’s a bunch of videos out there of peoples reactions to this effect, here’s one:
You can make the “Space Oddity” sound wherever you are with the nifty new Dubreq Stylophone inspired by David Bowie.
Want $500 of free recording software? Of course you do.