What don’t you want to be without? Write about that today.
The operant word is want.
Write about the things that would make you sad or annoyed if they drained from your life.
They might be material things, like hamburgers, pencils, or socks. They might be immaterial things, like affection, information, or irony.
Write about one thing, or write about many.
When you have filled a page, give your work a title and write the date on it. Add illustration if you like.