vanity armors, even the same ones with color variations will do.
1 item vanity armor (they need too much space)
pvp/pve gear t0
recipes for cultural armor/weapon
ooc speed boost
items that give better chance to get relics and tokens
full time access to unchained dungeons/areas
gathering resources boost
insta mastership in each profession/crafting
lvl 30 characters
bigger material bags
pets that fight alongside with you or give certain buffs in openfields