If you accumulate enough of those freebies, you might have the beginnings of a salvage business, especially since eBay has made it a nationwide market. The main thing to consider is whether you've got enough storage space without creating problems with the local planning commission, or domestic problems that will have you sleeping in one of your projects! I've got stuff that's been sitting in the same spot for 20 years or more, but I've got 100 acres, and a very understanding spouse! I'm ready to pull in two more relics soon. If I get independently wealthy tomorrow, it's going to take me 10 years to catch up on project work!
Jerry