This is a good one as I could say I just think that is something that would look amazing. But in truth most of the time it just pops into my head with what I see in front of me. I have a few shots that I need to start planning again as they are different from.
There was one that I would love to do. I have to say trying to explain it while working out how not give it away. Walking home from a shot and I saw this lady going by and just thought that would look amazing in a photo and set of them.
The best advice I can give you is just looking for at things and other peoples work which I should do more of. Most of the time it is online but then I will be thinking I would love to do some more fun shots. I have been going thought ideas but some of them are not possible.
So keep your eye out for new things.