Cascading Clock
Ultima Ratio is an intuitive playable Clock Divider, Clock Generator and Dual AR Envelope.
https://www.youtube.com/watch?v=JzxdrqcDII0
https://www.youtube.com/watch?v=jNVer_Rl1pE
http://www.gezeiten-modular.com/
Available as an assembled Module and as a DIY project.
No info about availability.
$236