I usually go to bed thinking about patching ideas and try them out the next day.
"Why couldn't I get that vibrato to work right?" "How could I use a switch to add interest to that patch?" etc.
I'm a big fan of Eno's "Oblique Strategies" too. If you aren't familiar, back in the 70s Brian Eno created a deck of cards with short phrases and single words that are meant to redirect artists out of their comfort zones. When you get stuck, pull a card and contemplate the phrase for a minute or two, then incorporate the idea into your music. It doesn't always lead to something cool, but it keeps you on your toes and shakes up your routine workflow. I believe he has used Oblique Strategies on many (most?) of his great productions including Bowie's "Low" and Talking Heads' "Remain in Light."
Here's a free website with random cards that you can click through:
https://www.joshharrison.net/oblique-strategies/