I was think along the lines of the holidays, there should be an event kind of thing where you get a Christmas cracker and pull it on someone and get like Christmas type item such as a Santa hat, but not no ordinary Santa hat. Maybe like a different Santa hat like a blue one or a green one etc.. or maybe Santa armor (not Santa suit) or something like that... just an opinion.
Some unrelated holiday customs could be like different color party hats, more color whips, for halo fans an energy sword, supreme claws (which are just a bigger pair of dragon claws), black color trimmed armor, dungeoneering armors.