Robofun Create has built a fully functional keyboard using Staropramen beer cans, demonstrating once more that the potential of systems like the Arduino and Raspberry Pi is only limited by the creativity of those who use them. The keyboard — which would be an instant hit at pretty much any party — is made of 40 beer cans connected to an Arduino-powered touch controller attached to a Raspberry Pi that controlled the television display. Robofun Create designed the keyboard as part of the 2012 Webstock contest, and attendees could use it to input their email address to win a trip to Prague. It can be plugged into any computer, and while the keyboard isn't quite as silly as a banana piano, it's definitely one of the more unique ways to make use of empty beer cans.