Andy asked if he could make a bluetooth phone-controlled Robot, so we thought we'd give it a go. We even managed to make it voice-controlled, without having to write any software for the phone!
There are more details here: www.espruino.com/Project+7
We've also just added a new reward - the Low Power Wireless Kit. It's got two Espruinos, and two of the amazing NRF24L01+ wireless transceivers.
These use virtually no power when in standby and work from up to around 60m away, so you can leave one Espruino inside and have one battery-powered Espruino outside transmitting data back to you every minute! You could even buy another wireless module, connect that to a Raspberry Pi, and then control your two Espruino boards wirelessly from the internet!