Use C.H.I.P. to make any old speakers AirPlay speakers. Use several C.H.I.P.s to make a network for a multiroom audio experience!
Using a VoCore to create the world's smallest AirPlay server.
Turn an Amazon Echo into a multi-room speaker.
I got a targus bluetooth speaker on a groupon deal. When I opened it, I found that there was sufficient room for the Raspberry Pi Zero W.
Want to add Apple AirPlay to your existing hifi system? Learn how to turn a Raspberry Pi into an AirPlay server.