Nazjatar
DAILY
 - Dailies/Quests
 - Summon in the middle (purple skull on map, 150 rep)
 - Kill King Gakula rare (50 rep/day)

ONE TIME
 - Rares (first kill = 50 rep)
 - Pet Battles (12 of them, 250 rep each)
 - Rank 5 Bodyguard (400 rep quest)
 - Each Bodyguard level gained (250 rep, but it seems inconsistent)
 - PvP World Quest during Flag Event (500 rep/week)
 - Laboratory Summon (500 rep/week)
 - 1-Time Chests (some have rep items)
 - Scrying Stones for hidden chests (Naga Deployment Orders for 150XP/follower and some rep, probably 1 time a week or ever)
 - Mrrl Daily Items can be Bodyguard XP (or rep?) (use Benthic Cloak to reveal 2nd item)
 - Rare drop Giant Crab Legs/Eel Filet/Reefwalker Bark/Fathom Ray Fin from crabs/eels/rays/trees (they give rep/bodyguard XP, seems to be one drop ever from trash mobs or weekly, can still obtain more than 1 from 1-Time chests/rares)