My family are all pretty used to my esoteric magpie habits, but if it was a rando person and assuming my friends came through on their promises about the box in my closet that needs to be burnt before anyone else sees it... there are a lot of options. It's a six-way tie between the box of 2' long molybdenum disilicide foundry heating elements, the remilled RPG-7 (anniversary gift), the 11 steamer trunks, the 16' paper mache snake (I don't actually know where that came from), the fusion reactor or the signed first edition of Uncle Fester's "Silent Death".

(Honerable mention goes to the weirdly high number of harpoons that are just scattered around)