Pick a poem that you wrote earlier in the marathon and then write a companion poem for it. The two can be closely linked and even share a title, or a riff on the same title, or the poem can function independently but explore the same ideas from a different direction.

or

Pick one of your favorite poems by another author and then write a poem as a response to it.

The two can be closely linked or your poem can function independently but explore the same ideas from a different direct. You should reference the poem your poem is a response to at the top of the page.