this.
Not to make anyone gassy, but I just recently picked up the RME UCX II, which features DuRec. For those who aren’t acquainted, it lets me plug-in a USB drive directly into the audio interface and record any or all inputs or outputs into separate files, standalone or not. I just stared using it as such while I sound design, compose, jam etc. It’s been pretty great!
The files are named after whatever you’ve named the tracks in TotalMix FX (RME’s software mixer). I suppose it can get kind of messy if careless, but having some recordings can be preferable to having nothing after all.
Edit: since I have Expert Sleepers ES-8 connected via ADAT, I suppose I could even make recordings of the CV from my Eurorack. I haven’t tried that yet though.