When you are washing dishes
Yes, this has happened to me. I need a new idea for my writing and I saw the dishes and I decided to wash them and when I was washing them an idea came to mind and I had to write it down immediately.
Taking a shower
This has happened so many times I have lost count. Whenever I am enjoying a nice warm shower an Idea pops in my mind. Why when I am having a shower I have no idea.
Why dose this always happen when you go bed and waiting to doze of an idea creeps into your mind and wish your mind had a recorder to record the story playing in our mind.
Yes cooking, your imagination creates a scenario for you when you are chopping something or cutting something.