Here is a collection of wearable music instruments that allow your kids to produce music and play interactive musical games. “JOHN PAUL GEORGE & ME” has guitar, bass, and drums t-shirts. Each shirt has a distinct pattern, based on the instrument it represents. The patterns were printed with conductive paint, which is washable.
Each shirt has a microcontroller in a removable pocket in the back to sense touches and send the data to a mobile app via Bluetooth. Multiple T-shirts can be connected to a single mobile device. More information about this project is available here.