Just a bit of online research on a small footprint Bluetooth-enabled Arduino clone for prototyping:
- RFDiuno – http://www.rfduino.com/
- Galago’s BlueBlock – http://logiblock.com/products/blueblock/
- TinyDuino’s Bluetooth shield – https://tiny-circuits.com/index.php/tiny-duino/tiny-duino-communication-products/tiny-shield-bluetooth.html
- RedBearLab’s BLEMini – http://redbearlab.com/blemini/
- Coin’s BLE board – https://github.com/CoinApps/arduino-ble-dev-kit/wiki
- BLEduino – http://bleduino.cc/about/