Constraints: I don't want modules whose full potential can only be unlocked by carrying an SD card back and forth to a computer. Not saying that stuff isn't cool, it just doesn't reflect what I want out of hardware in general.
Example: my prospective system has an https://modulargrid.net/e/erica-synths-plasma-drive">Erica Synths Plasma Drive in it, because while it's absolutely not the most versatile distortion out there, the idea of physically (not simulatedly) turning sound into plasma arcs and then back into sound is so damn cool that the joy of the concept it self makes it worth the cost and the space.
The MGrid Module Finder doesn't have "Experimental" as an option for searching by Function, so I turn to the forums. Show me the wackiest, coolest-in-concept modules you know of, with no regard for how versatile they are. I've got 184 HP worth of balanced, versatile utilities in my rack already.
Love you guys!