BTW, there's a free e-resource about poetry up just for today (March 18) if anyone is interested.
http://www.homeschoolfreebie.wholesomechildhood.com/It does have a short New Testament reference in it, so it isn't 100% secular. But it would be pretty easy to a) skip that part completely, b) substitute something else there, or c) treat the Biblical passage it suggests as strictly poetry and not as religion at all.
Because their stuff is often religious in nature, I don't usually post from this site here. But this one seemed mostly secular (or easy to secularize, at least), and is relevant to this conversation.
If you're interested, get it while it lasts!
