Playing in a band and jamming with others, when it comes to improvising, I start with the minor pentatonic scale. I know the five box positions pretty well. I have some licks in each, and can feel my way around. That's my grounding. I think that this is probably the "elementary school" of improvisation - which is not to denigrate its value as there's great music to be made from it. But surely it is not the be-all and end-all of improvisation. I also dabble with the major pentatonic and the major scale (by adding back in the two missing notes from the major pentatonic). But I'm hoping to find something that breaks me out of my current "go-to" licks. What is your framework of thinking when you improvise or find new riffs and licks and sounds?