I went to school to become an electrical engineer and I'd also consider myself a maker, but the mechanical portions of this project really challenged me. This is the most complex mechanism I've ever made.
The electronics are mainly an Arduino with a homemade shield. The shield has a microphone to detect the claps to start, a relay to control power to the motor, a button to detect cam position, and another relay to control the Applause light which is an LED strip behind a spray-painted piece of plastic.
I think the motor came from a hedge trimmer and the power supply is from a server.
The remainder of the frame and mechanism comes from my junk pile: scrap wood and metal, a belt from a printer, a lid from a jar of nuts, a bungie cord, lots of screws.
Oh, and the hands are meant for practicing nail art.