The word ground appears in many expressions. One can break, give, or stand ground. Things can be ground in, ground out, or run into the ground. There are groundswells, ground rules, and shifting grounds.
Let your mind relax and repeat the word ground. You might be surprised by the words the pop up along with it.
Fill a page somehow with words and ideas that have something to do with the word ground.
Write a list or a story, or some combination of both.
What rhymes with ground?
When you have filled a page, be sure to give your work a title and write the date on it, too.