They move things.
The list so far is:-
My wedding dress
My father's ancient camera
Some transfer paper (for scanning images to be ironed onto T-shirts)
My button tin
Not exactly the kind of goods that would attract a thief, so they must just be hidden somewhere... Maybe there's a secret room where they are all hiding out... maybe they are having a wild party out of sight of humans? What do you reckon?
Update:- Just found the transfer paper... so I guess the wild party is minus the printed T-shirts.