Deity's add an extra bit of roleplay to the game but I always wished weapons and armor added buffs if the player worshiped the deity. My mod aims to do just that. The first 3 items of the mod can be found in the tutorial chest in addition to their regular places in game. Items not marked with "Blessed" can also be found in the regular places. Items marked with "Blessed" can be bought from vendors. I aim to eventually add more custom weapons associated with the deities. This mod is intended to be used with mods that allow all classes to choose a deity as well as enabling the deity tags to be added  but the mod can still be used with the base game with clerics.

In Addition to Deity Tag Activator, I suggest downloading the mod “More Roleplay Options - Class/Race Deity Selection” from the in game mod manager. This allows all classes to choose a deity as well as adding an Agnostic option and adding back in the ability to choose Shar as a deity. Here is my personal selection of deities for companions:

Laezel: Vlaakith
Gale: Mystra
Astarian: Agnostic 
Alfira (AlfiraJoinsTheParty Mod): Oghma 
Wyll: Tyr
Karlach: Tempus
Minthara: Loth
Halsin: Mielikki
Jahera: Mielikki
Minsc: Selune 
Shadowheart: Shar or Shar/Selune (depending on in game choices.)

Items: 1.0
Amulet of Selune's Chosen: Gives Selune's Gift that will heal the player the max amount of hit points when healed if their Deity is Selune.

Sword of Justice: Gives Tyr's Justice that will give the player advantage Paladins if their Deity is Tyr.

Blood of Lathander: Gives Lathander's Strength which gives the player advantage against the undead if their Deity is Lathander.

Update 1: Amulet of Selune and Sword of Justice are now in their base game locations.

Items: 1.1
Grovetender Boots (Blessed): Gives Mielikki's Grace that prevents the player from getting entangled and slipping on ice and vines and ignores the effects of diffuclt terrain for both. Can be purchased from Arron in the Grove.

Hellrider's Pride: Gives Helm's Reward that gives the player Blade Ward when healing another creature.

Items: 1.2
Larethian's Wrath: Gives advantage against Half Orcs if the Player's deity is Corellon Larethian.

Phalar Aluve: Gives advantage against Loth Sworn Drow is the Player's deity is Eilistraee.

Staff of Arcane Blessing: The base game "Mystra's Blessing" is now set to only activate if the Player's deity is Mystra. Any player can still cast the Bless spell that comes with the staff.

Items: 1.4
Justiciar's Greatshield: Allows the player to cast Globe of Invulnerability if the Player's deity is Shar.

Chancer's Carcanet: Gives advantage on all attack rolls if the Player's deity is Tymora.

Ilmater's Aid: Gives resistance to bludgeoning attacks if the Player's deity is Ilmater. Item added back into the game and can be purchased from the grove trader.

Items: 1.5
Selunite Robe (Blessed): Followers of Selune can cast True Resurrection once per long rest..