Here’s something you can do with the Buff n’ Blend. Splice the send and return loops into concurrent paths and run as many effects in parallel as you want! If the PCB in the loop has blend knob, a 51k resistor on the Buff n’ Blend solves that. If you don’t want any amp signal at all, use a 100k resistor.
Here’s one build where I put four, FV-1 based multi delays in parallel.


Here is a demo using pitch delay.
Here is another where I splice another four FV-1 based effects together based on the EQD Arpanoid.


Here’s one video where I nix the arpeggiation in favor of using it as a four pitch chorus of sorts.
Here’s another video where I set the arpeggiation into four concurrent melodies. Set them carefully and they can harmonize. This is not the best demo of that!
Cheers!