I have never found a really good bike in the trash. A few department store machines that I gave to the bike co-op and an ok bike with cottered cranks that had a free sign on it that I gave to a college friend to use on campus.

Now non-bike stuff is another story.
Couch -- This end up frame that was used for about 6 years (with a set of spare cushions that we had) and then sold on Craigslist
Lamps -- many
Wood wine rack/store display -- used for a year as a bookshelf and then sold on Craigslist
Computer stuff (old P2 and P3 machines) that were given away on FreeCycle.
The computer I am using right (P4) now and the laser printer (Hp4000tn) to my right.
Garden tools (shovel, pick axe)
Bales of straw to use in the garden
Walnuts (thousands of them!) put in my backyard for the woodland creatures.
Sheets and bed covers washed and used as seat protection when hauling things in the car
Lawnmower that I used for 5 years at my old house
Radios and vcrs (that was a long time ago)
Bathroom sink used as part of the remodel of our old house
Hand painted poster for a performance of Death of a Salesman from 1979

That is all I can remember.