I liked their circuit so much that I decided to mangle it and make it interactive and even more annoying. It's easy to due, I just followed their schematic in the video to make my first one on a bread board. Then I got bored with it and wanted to add some interactivity. I sorta turned it into a single 555 atari punk console. I suggest hooking up 3 speakers for the best effect. But my box could only fit one.
Step 1: Download the Fritzing File
It should be easy to follow.