Here's a few items with +CHA and other useful stats for cleric.
Back:
https://wiki.project1999.com/Othmir_Fur_Cloak
Chest:
https://wiki.project1999.com/Sebilite_Scale_Coat
Face:
https://wiki.project1999.com/Bone_Mask_of_the_Jarsath
Legs:
https://wiki.project1999.com/Sebilite_Scale_Leggings
Neck:
https://wiki.project1999.com/Amulet_of_Insight
Waist:
https://wiki.project1999.com/Sludged_Girdle
Those are "full-time" items, that are beneficial to clerics and also have charisma. But, it's a good idea to have a seperate charisma set for the times when you want to Lull your way through a dungeon. Having gear that you just swap in to Lull, and then going back to your normal gear during a fight.
https://wiki.project1999.com/Category:Cleric_Equipment <---- Here's a list of Cleric Equipment by slot. Sort by Charisma, sort by No Drop/Droppable, and go shopping for a charisma set.
At 45, save up for a
Donal's Bracer of Mourning for mana-free Pacify. With high charisma, cleric can get just about anywhere.
Have fun!