edit your accname.lua both accessoryid.lua
accessoryid.lua
ACCESSORY_PINKBUNNY_HAIRBAND = 663,
ACCESSORY_GREENBUNNY_HAIRBAND = 664,
ACCESSORY_OLD_ELFEAR = 665,
ACCESSORY_THA_MAERO_MASK = 666,
ACCESSORY_THANATOS_MAI_MASK = 667,
--668 free
ACCESSORY_FISHPIN = 669,
ACCESSORY_CUSTOM_HAT = 900,
accname.lua
[ACCESSORY_IDs.ACCESSORY_PINKBUNNY_HAIRBAND] = "_ÇÎÅ©Åä³¢¸Ó¸®¶ì",
[ACCESSORY_IDs.ACCESSORY_GREENBUNNY_HAIRBAND] = "_±×¸°Åä³¢¸Ó¸®¶ì",
[ACCESSORY_IDs.ACCESSORY_OLD_ELFEAR] = "_°í´ë¿äÁ¤ÀDZÍ",
[ACCESSORY_IDs.ACCESSORY_THA_MAERO_MASK] = "_Ÿ³ªÅ佺Àǽ½Çİ¡¸é",
[ACCESSORY_IDs.ACCESSORY_THANATOS_MAI_MASK] = "_Ÿ³ªÅ佺ÀÇÁõ¿À°¡¸é",
[ACCESSORY_IDs.ACCESSORY_FISHPIN] = "_¹°°í±âÇÉ",
[ACCESSORY_IDs.ACCESSORY_CUSTOM_HAT] = "_Sprite_Name_Here",
for more info >> http://rathena.org/wiki/Custom_Items
then edit your item_db2 or item_db for the item structure
ID,DBName,ScreenName,Type,Price,Sell,Weight,ATK,DEF,Range,Slot,Job,Upper,Gender,Loc,wLV,eLV,
Refineable,View(this is where your accessory ID goes for ex:900),{Script},{OnEquip_Script},{OnUnequip_Script}