I recently started to save 'scraps'....the tops of celery and carrots, the green of the leek and fennel, the onion roots, etc. I put it all in gallon freezer bags for stock. I'm even guilty of letting the occasional veggie go limp and those get thrown in there as well. Why you ask? Stock!!! I love homemade soup and it tastes even more amazing if you make your own stock. I have done turkey (thanks for the Thanksgiving remains mom!) and veggie stock too. It just took me about 10 minutes to break up the remains of our Christmas Eve turkey (was in the freezer) with some veg, an onion, couple cloves of garlic, peppercorns and a bay leaf. It all went into the crockpot on low with several cups of HOT water and sometime between 12 and 24 hours from now I will have homemade stock for soup and other recipes.