Creative work sometimes needs a shake-up, a stretch. I like trying new things when I'm between big projects. Here are some examples to try if you're ever so inclined:
Write a short story all in the second person.
Write a story in the format of a letter or email.
Write a story in the format of social media posts.
Write a poem in a form you've never tried before: sonnet, villanelle, concrete poem, etc.
Write a scene using only dialogue.
Write a poem or story emphasizing any of these: alliteration, hyperbole, onomatopoiea, metaphors.
Write something in rhyming couplets.
Write an updated version of a myth or fairy tale.
Write a monologue or stand-up comedy routine.
Produce an ekphrastic work (i.e., based on another work of art, such as a musical composition or painting).
Use a photograph as a writing prompt.
of these exercises you may have done back in school, when you were
first learning what these concepts were. It can be fun to try them again
now that you have more tools in your toolbox.
The point is
mostly to flex the creative muscles. If an exercise turns into something
that can be used in a serious project, it's just a bonus.