OK I saw this simple bubble maker (really simple) and thought, hey I can do that. The article references other bubble makers, many that are way out of my league to build. But…the one at the bottom. I can’t figure out what the ring is over the pvc elbow. But its totally doable too.
http://hackaday.com/2016/07/30/arduino-absentmindedly-blows-bubbles/
More interesting one here https://www.youtube.com/watch?v=j8S6-ferjuY