Haiku Finder is a quick and extremely dirty way of finding haiku’s in any texts.
You may not want to let your students find out about this site, or, alternatively, having them plug in their existing texts might make for an interesting way of introducing haikus.
I’m not particularly poetic (tell me something I don’t know), I have to go back through a month of posts to get my first Muddle haiku:
One of those things is
that rabbits eat their own poop.
Well not exactly.— from On Rabbit Digestion