I don't really have a method for handling these. I have a collection, but I'm not keeping them for any good reason. I have been known to spread them around at discounted prices to help people in need. Most notably I sold a MPx220 for a couple bucks to a high school student who managed to drop his MPx200 into a glass of water. He hacked the phone like no man has ever done - and he's lovin' it.
Right now my collection is kind of thin. I have an old Tanager - worthless, a SMT5600, and a C500.
"I have no special talents, I am only passionately curious" - Albert Einstein