The guys at Agency Republic got so fed up of people queing up unpopular songs in their public Spotify-powered sound system that they created this interactive wall poster that can be used to easily skip tracks. All you have to do is slap, hit, or throw something at it! 

People working in the studio's office can queue up the music they want to hear, but if it happens to be a crappy piece, other people who work in the same space can throw something as light as scrunched up paper, nerf darts, punch it, or hit it so that a knock sensor behind the poster can skip to the next tune. It's a pretty cool attempt at maintaining an office playlist democracy don't you think?