Tech idea ##23: A crowdsourced jukebox. Years ago in the early days of Wifi, there was a hack to create a wifi controlled jukebox. Anyone could cue up and upload tracks that then played on a boombox. Now that everyone has got wifi pocketables that feels like an idea to re-visit. Get a bunch of friends round the kitchen table and add in some "like, skip, ban" voting algorithm to crowd source the background music.