You may be the greatest living banana-pianist, but how will you ever know if you don't make yourself a banana piano? Good news, that project and countless others are easier than you think they are with MaKey MaKey.
This is a kit for a 3x3x3 cube of RGB LEDs. You can create a colour cube show with this kit, it actually look quite impressive, especially at night! You could always attach one of these suckers to your alarm clock and blast yourself awake with a multi-coloured spectacle!