I take it you mean a decoration (as opposed to an item placed in a chest). If the item was bound to you, then it will be returned when someone removes it from the hook. If the item was not bound, then anyone with decoration privileges will be able to remove it. What they do with the decoration after that is up to them. Otherwise, have you asked the kin leader or an officer to return it to you?
"Everyone's got one. Better to be a smart one than a dumb one." - me
"It's people like you that [I]think[/I] you know everything that give those of us that [I]do[/I] a bad name." - me
"Eat, drink, and be Merry, 'cause Pippin was a fool of a Took."