No not the items that grant you costume effect. Have any of you ever wanted to wear a certain armor piece but now it's considered outdated OR there's already something with better stats? I know other MMO's do it now, but truth be told it'd be -awesome- if players could actually take pride in dressing their online avatar up in things that they want. All you have to do is have the armor piece equipped at some point, then it gets added to your costume catalogue. This means that if you equip the entire iron musketeer set, yet you're now condemned to a look you don't want. Well, with the commands that I can provide below, you'll be able to reobtain that look while keeping the stats of the new armor.
/costume "Iron Musketeer's Armet"
/costume "Iron Musketeer's Cuirass"
/costume "Iron Musketeer's Gauntlets"
/costume "Iron Musketeer's Cuisses"
/costume "Iron Musketeer's Sabatons"
Each command will change your character to look as if they were wearing that piece.
Please consider this SE, you've been slacking lately and this would actually be a fun little thing people could play with while you do your thing.