One of my favorite activities is to go back and see what I can add to old photos. Sometimes to try to make them work better, others just for the sake of the action of adding something. This definitely falls into the later category.
I also spend a lot of time toying around an experimenting with ideas. 99% of These never get finished and remain hidden little bits of practice. They’re one of my favorite things though. It’s a good mental reset to space out and see what your hands can make.