My mind doesn't just wander, it skips along the path to nowhere tossing daffoldils. For instance, I had Monday off from work, thus my crazy brain thinks its Tuesday today. Hence the late post.
My ideas come from all sorts of places. Errant words picked up in a shopping mall, a book in the display window, a song on the radio, dreams. A lot of them come from dreams. That's your muse working. Mine is being very cooperative lately. Don't be afraid to skip down the garden path of your thoughts.