CandyFab – a 3d printer that makes objects by melting sugar
Pachelbel’s Canon is everywhere [youtube]
Cruel to be Kind – a live-action game where you play in the real world, with real people – including random strangers who aren’t even playing the game. It consists of trying to assassinate other players by being nice to them; all players have a secret weakness to a particular type of kindness. Of course, as you don’t know who is playing, you can be nice to a non-player, but that might be fun as well…