I had a bard in one campaign with a hat that could be changed at will to any sort of headgear. Each round I would declare what my hat was, from fedora with a roc's feather in it to a derby to a top-hat to a ball-cap to a cowboy hat, etc, ad nauseum.

That hat went through 3 PCs from different parties as folks would kill the owner for it, creating a vicious circle of death and snappy dressing.