“Inspiration is for amateurs. The rest of us just show up and get to work. If you wait around for the clouds to part and a bolt of lightning to strike you in the brain, you are not going to make an awful lot of work. All the best ideas come out of the process; they come out of the work itself.”
Chuck Close
These are perennial questions: Where you look for inspiration? What does your daily schedule look like? What inspired that idea?
But I think Chuck Close is right: waiting for inspiration is a good way to make your art if it’s a hobby. If it’s a career, you have to do the work and let the inspiration join you when it wants.