Amulet of the Devout +2

Rare

Wondrous item, rare (requires attunement by a cleric or paladin) This amulet bears the symbol of a deity inlaid with precious stones or metals. While you wear the holy symbol, you gain a +2 bonus to spell attack rolls and the saving throw DCs of your spells. While you wear this amulet, you can use your Channel Divinity feature without expending one of the feature’s uses. Once this property is used, it can’t be used again until the next dawn.

Rhythm-Maker's Drum +2 (Yeti Language Minor Property)

Rare

Wondrous Item, rare (requires attunement by a bard) While holding this drum, you gain a bonus to spell attack rolls and to the saving throw DCs of your bard spells. The bonus is determined by the drum’s rarity. As an action, you can play the drum to regain one use of your Bardic Inspiration feature. This property of the drum can’t be used again until the next dawn. This item is found in Tasha’s Cauldron of Everything. Slatter’s rhythm-maker’s drum was a gift for completing bard training, and now it is a gift for rescuing him. The frosty mountain patterns on the side provide an additional Language property. Language. The bearer can speak and understand Yeti while the item is on the bearer’s person. Source: SJ-DC-BST-04 Blasted