Collectables buttons. From what I can tell, its exactly the same button/ability set from DoL to DoL, but in order to use them you need to equip your bar with a separate set of identical buttons in order to use collectables on multiple DoL jobs. Its not a big thing but it drives me nuts!

Example: BTN Collector's Glove ability with exactly the same icon and use options as MIN Collector's Glove, only one says BTN and one says MIN on it. :/