CafeJukebox 
A interactive app that lets customers be apart of the cafe by allowing them to choose the next song in the playlist. This same app could have a game feature where users can try to link songs from table to table. (Ex.) one table would choose a song, and the next table would have to capture part of that song (a lyric) that would go with the their song (one-up-sies.) A benefit to this app, is that the users feel like they are part of the cafe (they are the DJ), which can build a strong bond and create customers for life. This can also create friendships with other customers (random meetings).