I came home the other night only to find a doorknob on my welcome mat.  It was so weird because none of the neighbors were missing a knob.  I definitely stared at it for a long while before I decided to leave it for the doorknob fairy.  Sure enough, when I left for work the next day, it was gone.  There was no money left under my mat though.  Only the toothfairy is loaded, apparently.