I come from a keyboard / guitar background, and like to have a module that will allow me to export
Eurorack cv to a guitar pedal and bring back in (preferably in stereo). Cheaper than Eurorack modules, guitar
pedals make for interesting sound effects (the Drolo Stretchweaver pedal -- wow!). Even an EQ pedal works
well for less money. No external sound effects in your system?
Bored Brain has some of those interactive modules with external guitar pedals, and others. Worth exploring!