Do you want a fun and easy-to-build circuit? Here’s the simple, but fun Atari Punk Console – with schematics and parts list. It’s a quick build, so you can easily build it during an evening.
It takes its name from the old Atari computers of the 80s because it makes similar sounds.
And after my (not-so-intense) research (I basically just read about it on Wikipedia), I’ve come to learn that the circuit was first published in a Radioshack magazine in 1980.
Here’s a short clip of me playing with the circuit I built: