Write about how some band or artit's cover song has impacted your life.
Write a poem constructed using stage directions. Whether they are the only element of your poem, or just a part of it is up to you.
Imagine one of your favorite childhood books rewritten by one of your other favorite writers.
Take a line from any Jennifer Knox poem and write a poem using that line as a title. It's ok if it morphs into something else and you decide the title doesn't work with the finished product, but start with the title and see where it takes you.
Write Or Die
Scott Woods's Twitter Prompts
Rachel Mckibbens' Prompt Blog
The 30/30 Prompt Blog
Asterisk And Sidebar Prompts