For creativity in problem solving, if the problem is well defined, I've found that light physical activity has been useful for clearing my mind and returning to

For creativity in problem solving, if the problem is well defined, I've found that light physical activity has been useful for clearing my mind and returning to the task with a refreshed perspective. When coming up with inspiration I usually try to think backwards. Backwards in the sense that I might start with some idea which is concrete and, start considering it's more abstract forms. So, for example I would consider a pencil as a concrete thing. I might start considering writing instruments. I might then start considering HIDs. From there that's a big world to explore.