According to this BBCnews article, you could own a piece of the Concorde, in theory for as little as $1.25. Air France is auctioning off all its Concorde stuff, from whole engines and nose cones down to pictures and scale models, later on this year. None of the items will have a reserve, so it will all go to the highest bidder no matter what that might be.

Ok, now to get my family's ebay sniper on the job...