Do you have a muse? Write about her. I say “her”, because the original Greek muses were female. But yours may not be. Write about what form he/she/it takes and how they influence you. Does he/she/it visit often or do you have to chase them down? Do you have more than one?
Global warming is giving some of us hot summer days and nights, much hotter than we care to experience. Write about the physical and psychological effects that heat has on a character (or yourself) and how it feels when the rain finally comes. Lots of space here to wow us, appeal to our senses. Of course, some of us are having disappointing summer days. Write about them and the yearning for heat. Of course, this needs to be more than a straightforward weather report! Work it into a story.
Do you find it difficult to write from the perspective of a character of a different sexual identity? Try your hand at writing a scene where boy meets girl, or indeed, from the other options available to us in this modern age. (Girl meets girl, boy meets boy, etc…)