Magic Items

Wondrous Item, Common (Requires Attunement by a Wizard)
This antiquated, cone-shaped hat is adorned with gold crescent moons and stars. While you are wearing it, you gain the following benefits:
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You can use the hat as a spellcasting focus for your wizard spells.
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You can try to cast a cantrip that you don’t know. The cantrip must be on the wizard spell list, and you must make a DC 10 Intelligence (Arcana) check. If the check succeeds, you cast the spell. If the check fails, so does the spell, and the action used to cast the spell is wasted. In either case, you can’t use this property again until you finish a long rest.
This item is found in Xanathar's Guide to Everything, pg. 137.
This red conical hat is very worn.

Wondrous Item, Very Rare (Requires Attunement by a Wizard) This old book, titled “Book of Trios,” is remarkably well-preserved. Its brown and gold cover is coated with a fine layer of pixie dust, which gets on everything it touches. When a spell is cast from the book, the pixie dust swirls into a glittering aura of arcane energy around the caster. While you are holding this leather-bound book, you can use it as a spellcasting focus for your wizard spells, and you gain a bonus to spell attack rolls and to the saving throw DCs of your wizard spells. The bonus is determined by the book's rarity (+3). You can use this book as a spellbook. In addition, when you use your Arcane Recovery feature, you can increase the number of spell slot levels you regain by 1.

This silver-and-black bow is engraved with the phases of the moon. You gain a +1 bonus to attack and damage rolls made with this magic weapon.

When you hit with a ranged attack roll using this magic bow, the target takes an extra 1d6 radiant damage. If you load no ammunition in the weapon, it produces its own, automatically creating one piece of magic ammunition when you make a ranged attack with it. The ammunition created by the bow vanishes the instant after it hits or misses a target.

While wielding this magic bow, you can use a bonus action to enter a semi-incorporeal state until the start of your next turn. While semi-incorporeal, you have resistance to bludgeoning, piercing, and slashing damage. Once this bonus action is used, it can’t be used again until the next dawn.

Trinket (treat as if a common magic item)
This green, βloppy, conical wizard’s hat magically contains six different items. Once a day a
character can pull an item out of the hat. Which of the items that appears is determined
randomly using a d6 and the list below. The item lasts for 1 hour.
1. a bouquet that smells like anxiety,
2. cotton candy that envelops and obscures the closest tiny object until the candy is eaten
away (no nutritional value),
3. a single mosquito that prefers to feed on oozes,
4. a watering can βilled with sand,
5. a glowing severed head identical to the head of a living creature closest to the hat’s holder,
6. a 20 ft long-5 ft wide rainbow beam of light that lasts one hour or until dismissed,
Cost 125gp

These gloves seem to almost meld into your hands when you don them. When a ranged weapon attack hits you while you're wearing them, you can use your reaction to reduce the damage by 1d10 + your Dexterity modifier, provided that you have a free hand. If you reduce the damage to 0, you can catch the missile if it is small enough for you to hold in that hand.

It uses the stat block of a giant poisonous snake.
The serpent is a construct that understands and obeys whoever was holding the staff when it transformed.
It has immunity to poison damage and the poisoned condition. It doesn’t require air, food, drink, or sleep.
When it drops to 0 hit points, roll a d6. On a roll of 1, the snake turns to dust and is destroyed. On any other roll, it changes back into a staff and breaks into 1d4 + 1 pieces that must be magically mended before the staff can be used again.

The rapier is flavored as "Rapier of the Dark Huntsman". If you're curious about the flavor text:

"Weapon, rare (requires attunement) This matte-black rapier does not reflect light. It radiates a faint fiendish aura, and turns chill to the touch when within 30 feet of a good-aligned cleric or paladin. Once attuned, the wielder often feels hungry, even if they have just eaten. However, when the life stealing power is used, the wielder experiences an invigorating euphoria and feels satiated. The blade glows dully when it has fed. When you attack a creature with this magic weapon and roll a 20 on the attack roll, that target takes an extra 10 necrotic damage if it isn't a construct or an undead. You also gain 10 temporary hit points. Proficiency with a rapier allows you to add your proficiency bonus to the attack roll for any attack you make with it.