At the last Crochet Klatch, I handed out instructions and a couple of ideas for using plastic "yarn" made from grocery bags, newspaper covers, and garbage bags. I showed the group an easy way to turn out yards of the stuff in short order.
Today, I went looking for free patterns, mostly with regular yarn in mind, and stumbled on a LONG list of free patterns for "plarn"! Holy cow!
Check this out: http://www.crochetpatterncentral.com/directory/plarn_items.php
They have patterns listed for everything from purses and pots to Barbie dresses and rugs. There's even a pattern for making a crochet hook carrying case out of plarn and a small piece of cloth.
Happy pattern hunting and hope to see you at the next meeting in August.