Stephania and the feather-instrument

This instrument is light-sensitive - the wire Stefania is holding has a little sensor on the end so you can control its rattling and whirring by covering/uncovering the sensor. As it shakes itself, of course, the feather shakes too! The battery is attached to the top of a Matchbox car with a little blob of Blu-Tak so it can follow the can around while it "walks"!

Done