Extendable Cylinders/ Trombone

thingiverse

With its design inspired by a lightsaber, these extendable and collapsible cylinders can be easily manipulated with just a flick of your wrist. As a musical instrument, here's how you can use it: remove the two smallest tubes, then buzz (similar to playing a trumpet) into the larger tube; alter the sound by sliding in the smaller tube in and out.