have you come across Brian Eno's Oblique Strategies? a really useful tool for getting past blocks in any field - originally a set of cards, but also available freely online
-- JimHowell1970
+1 on the Strategies. Eno and Schmidt really came up with a classic "mind-jogger" for musical purposes with that, and it doesn't surprise me that we now have Internet versions: https://obliquestrategies.app/020003/ I use a local version of them to keep from pulling up something huge like Firefox when I'm already running Ableton. You can find them on the Apple Store and on Google Play as well.
One other mindjogger that comes to mind is the score for Stockhausen's "Aus den Sieben Tagen". All of this consists of texts which contain instructions to the performer(s), and the concepts that Cholly plays with here are very similar in character AND result to the Strategies. In a sense, they're a sort of instructions for koans specifically for musicians. If you're into envelope-pushing, this is like using a NOS-powered bulldozer to do some REAL sound-shoving!