That's right, folks! You can own something that was used by NASA in the shuttle and/or Hubble programs!
http://gsaauctions.gov/gsaauctions/aucindx/
Granted, it's not like they're selling off heat shield tiles or anything, but still, it'd be kind of cool to be able to say that you've got a piece of shuttle history!
(Mod note: I'm not affiliated with the site, and this isn't a spam. I just thought it was kinda cool.)