Jeff in WI,
I'd set aside anything neat/old/rusty and take it (or at least photos of the items) to an antique shop...to see what they might offer you.
Or if you have the time/interest in selling on ebay... I just watched a rusty old mailbox sell for $27 dollars PLUS shipping costs.
While being A LOT of work... it sure would be fun to help sort through that - just to see the old, rusty stuff!!
NEAT STUFF THAT I SEE AT A GLANCE:
old cans like the Liquid wrench
old oil can (looks like it could be one style of IHC)
that huge glass jug (everything is plastic now)
clawfoot tub - especially if it has the feet on it
old hub caps (some people use them for art in a rec room... have also seen a guy make clocks out of them)
rust cow stations - people buy them for yard/garden art (I'd even hang one on wall in the house if I had room)
belt pulley wheel
looks like some type of pan-seat
even those rusty bolts and galvanized buckets that hold the bolts