YouTuber AXL OTL shares Michel, his elaborately designed cardboard modular synth with some amazing features. I sincerely hope app developers take note and bring some of these novel concepts into the world of apps. I especially love the Love module! The video is in French, but English subtitles are available!
Let me introduce you my synth: Michel!
If you want a real low-cost modular synth, Ants! is on Kickstarter now for around €500. This actually looks like a pretty compelling package; with 4 oscillators it beats out the Moog Mother 32 for sound sources, but the filter seems limiting. This one has nearly reached its funding goal, so they should ship in April 2017! Thanks to reader Martin for the heads-up on this one.