I dunno if this is a common idea, but I had a cool brainwave with this. The two channels are fully isolated from each other, so instead of thinking of them as left/right, I have this in line with the input/output from the patchulator, so one channel has the "dry" audio as it comes from the mixer, the other has the modulated sounds on their way back out. There's a separate volume for each, but also one of the toggles has a channel-switching function, which means that I can send a loop recorded from the patchulator input back into it for another round.
(This can also combine in a cool way with that other nano looper on the top left... the stereo looper has a speed control, so you can slow the loop down a bunch. So with that channel-switching function, I can record a loop of the weirdness from these pedals, slow that loop down and send it back in and record that into the other looper. Then I can repeat the process as many times as I want, slowing the loop down again each time. It gets weird and artifact-y pretty quickly. It's a pretty laborious process, so I haven't done much with the idea yet, but I have tried it enough to prove it works.)
Sorry for the verbiage... I dunno if all of that is an obvious idea to everyone but me.