Wondrous Item, rare (requires attunement by a beast)
These bracers are emblazoned with the visage of a flaming phoenix.
While your companion is wearing the bracers, your animal companion deals an extra 2d6 fire damage to any target it hits with any unarmed strikes and natural weapons. Additionally, your companion gains resistance to cold damage.
Wondrous Item, rare (requires attunement by a beast)
These bracers are emblazoned with the visage of a winter wolf.
While your companion is wearing the bracers, your animal companion deals an extra 2d6 cold damage to any target it hits with any unarmed strikes and natural weapons. Additionally, your companion gains resistance to fire damage.
While your animal companion is wearing this collar, you can use a bonus action to speak the collar's command word and cause your companion to assume the appearance of another creature. You decide what your companion looks like, including color, form, and clothing, but the companion retains its normal size, bulk and weight. You can't change the companion's body type, so you must choose a form that has the same basic arrangement of limbs. Otherwise, the extent of the illusion is up to you. The illusory appearance lasts until you use this property again or remove the collar.
Armor (studded leather), very rare (requires attunement by a beast)
Your companion has resistance to one of the following damage types while they wear this barding: Acid, Cold, Fire, Force, Lightning, Necrotic, Poison, Psychic, Radiant, Thunder. You can change the type of resistance the barding grants when you and your companion finish a long rest.
These boots are made for a four legged animal companion.
While your animal companion wears these boots, their steps make no sound, regardless of the surface they are moving across. The companion has advantage on Dexterity (Stealth) checks that rely on moving silently.
Wondrous Item, uncommon (requires attunement by a beast)
While wearing this collar, your companion can breathe normally in any environment, and they have advantage on saving throws made against harmful gases and vapors (such as cloudkill and stinking cloud effects, inhaled poisons, and the breath weapons of some dragons).
I wanted to make some Companion specific Magic Items for my players. Figured I would share them here:
Bracers of the Flaming Phoenix
Wondrous Item, rare (requires attunement by a beast)
These bracers are emblazoned with the visage of a flaming phoenix.
While your companion is wearing the bracers, your animal companion deals an extra 2d6 fire damage to any target it hits with any unarmed strikes and natural weapons. Additionally, your companion gains resistance to cold damage.
Bracers of the Winter Wolf
Wondrous Item, rare (requires attunement by a beast)
These bracers are emblazoned with the visage of a winter wolf.
While your companion is wearing the bracers, your animal companion deals an extra 2d6 cold damage to any target it hits with any unarmed strikes and natural weapons. Additionally, your companion gains resistance to fire damage.
Glamoured Companion Collar
Wondrous Item, uncommon
While your animal companion is wearing this collar, you can use a bonus action to speak the collar's command word and cause your companion to assume the appearance of another creature. You decide what your companion looks like, including color, form, and clothing, but the companion retains its normal size, bulk and weight. You can't change the companion's body type, so you must choose a form that has the same basic arrangement of limbs. Otherwise, the extent of the illusion is up to you. The illusory appearance lasts until you use this property again or remove the collar.
Barding of Adaptive Resistance
Armor (studded leather), very rare (requires attunement by a beast)
Your companion has resistance to one of the following damage types while they wear this barding: Acid, Cold, Fire, Force, Lightning, Necrotic, Poison, Psychic, Radiant, Thunder. You can change the type of resistance the barding grants when you and your companion finish a long rest.
Boots of the Panther
Wondrous Item, uncommon
These boots are made for a four legged animal companion.
While your animal companion wears these boots, their steps make no sound, regardless of the surface they are moving across. The companion has advantage on Dexterity (Stealth) checks that rely on moving silently.
Collar of Adaptation
Wondrous Item, uncommon (requires attunement by a beast)
While wearing this collar, your companion can breathe normally in any environment, and they have advantage on saving throws made against harmful gases and vapors (such as cloudkill and stinking cloud effects, inhaled poisons, and the breath weapons of some dragons).