I tend to come up with most of my ideas during late night showers (i.e. around midnight), although I do my writing whenever. The one moment I can't write, however, is when there are people near me. I tried to write something on notebook paper while I was at a restaurant, and I struggled putting anything to paper and instead doodled some art, which is odd since my grandfather was there and he once roleplayed tabletop back then/is into fantasy and all that.