The “oh yeah, THAT” spark of how to spend your 15 minutes of You time might be waiting in a different part of the your brain—not the part that does your taxes or remembers to call your mom.
Try freestyling with LEGO blocks instead of just building the picture on the box. A good friend did a 100-day program to UNBLOCK (pun intended) her own creativity. Most days she found her LEGO block building insightful in surprising ways. On other days it was just plain fun. Win-win. When your hands and brain do something new together, WHO (I can’t help it) knows what ideas might pop up?