During Lunar Diplomacy I was able to get two of each of the eight items you need to wear. My main trick was when I got one, I would wear it, then I could get/make another. I am not sure whether this worked for all the items. I also tried giving the item to the woman collecting them at the altar, then getting another, but I don't remember whether that worked for any of them. I tried a lot of things - putting one in the bank didn't seem to help, I couldn't find a table close enough to set one on. If you are into having more than one of things and haven't done this quest yet, take your time and you should be able to get two of all the ceremonial clothing and jewelry. Now I am trying to figure out which parts are useful and not just decorative. The legs are pretty nice with +7 magic attack. The gloves are mostly better than mystic. The ring is the only one I have with any bonuses - magic attack and defense +2. I think it has already been mentioned, but I was also able to get 28 lunar staffs by bringing along 28 dramen staffs and making them all into lunar staffs during that part of the quest.