I blogged about the wonders of Freecycle a while ago (so long ago I no longer know where the post is), but have you ever heard of Yarncycle (Ravelry link)?
It basically works on the same concept as Freecycle, except it only deals with yarn.
I got two skeins of super bulky red/black yarn from a lady in Canada a while ago, but did not really have an idea of what I was going to use it for.
After knitting up my sleeves, I decided that I needed a leg equivalent and that was when that free yarn (well, not quite, since I had to pay postage) came to good use.
It's so warm and snug! Now I can wear short skirts and not have to worry about cold calves!
Had some yarn leftover that did not really amount to much, except for a headband that I can use for when I go for yoga or pilates!
And the proudest moment for me is the fact that I made both more or less with a made-up pattern!
Free yarn well-used I say.