For general PvM settings, 2x Pendant of Harmony is a poor man's AA card. They also don't require 77 LUk for extra 100% HP/SP recovery effect. Really comes in Handy in Bio4 where you're constantly spamming Heals.
Although I have the Light of Cure with enchant, I never find myself in my AB career spamming that much high heal to sacrifice accessory slot for it. Offeritorium + Sanctuary + Heal/Col Heal have no delays and do a pretty good job at continuous high amount of healing. Outside of leveling, your partner likely carry some pots and ygg seeds as well.
For defensive, you can get 2x Glorious Ring or 2x KBC Carded accessories. Waterdrop Brooch, Expert Ring, Black Rosary (for WoE 100MDEF build), and Spell3/3 RWC pendant are among popular choices.