A circuit bending classic
Perhaps the oldest project I still have in my possession, is my circuit bent Furby. A lot of these have appeared over the years, but their creators have a tendency to either completely redesign them, or to leave large control boxes filled with switches connected to them.
I wanted mine to look as original as possible. Cute and cuddly one second, freaking people out the next, similar to how demonic possession works in horror films. The only outwards visible change is the replacement of the reset button on the bottom, which is now an on/off switch.
Warning: all videos are quite loud. You might want to lower your volume before playing them.