Last person in dungeon and loot

[Kirika-]

Also, you can turn off looted/received gear auto-dropping into your Armory Chest, and have it drop into your Inventory bag instead.
Look in System/Character Configuration/Item Settings and un-tick "Store all newly obtained items in the Armory Chest"
This way you don't have to slug through your Armory to find stuff to sell/turn in/desynth, as it will be in your bag in order of received.

Don't forget, you can turn in unwanted gear loot at your Grand Company for company seals to use for buying various crafting, quest items, /emotes, housing items, glamour items, and gear, plus you can buy Ventures for your retainers for GC seals. If you are in a Free Company, GC turn ins also count toward your FC Rank and credits, which provides better FC buffs for your character and allows the FC access to supplies for Air Ship and Submersible missions.