Thanks for the feedback. I take a look into the shift register. Pico System III is the eurorack version, so no case, but it is a good idea. I think there are some small cases and affordable (4 Ms pod maybe) cases for it.
-- iron_at

When it comes to a second case, another idea is to use it for all of your real-time controllers, sequencers, mixers, mutes, etc. Anything you want to be very hands-on with is nice. Just be sure the case is deep enough to hold them. Some skiffs and palettes are rather shallow.