There are several websites who post poems by well-regarded literary poets on a daily basis, including Poets.Org, Poetry Foundation, and Verse Daily.
For today’s prompt, read poems posted for today on one or all three of these websites.
Select a first line of your choice to begin a poem of your own.
Once your poem draft is more or less complete, remove the first line and give your poem a new and unique title.
If you decide to keep the first line, just credit the poem and poet from which the line is borrowed with an epigraph. Something like “after Emily Dickinson.”