Magic Items

Bell of Silent Carols (Horn of Silent Alarm)
Wondrous Item, common
This bell has 4 charges. When you use an action to shake it, one creature of your choice can hear the bell’s ring in the tune of festive Midwinter carols, provided the creature is within 600 feet of the bell and not deafened. No other creature hears sound coming from the bell. The bell regains 1d4 expended charges daily at dawn.

Wondrous Item, uncommon (requires attunement)
While this stone is on your person, you gain a +1 bonus to ability checks and saving throws.
This stone is made of a murky, green crystal and is set on a length of heavy pig-iron chain allowing it to be worn (uncomfortably) around the neck. As an action, the wearer can cause the stone to shed pale green light as a torch. This item can be found in the DMG.

Pistol 250 gp 1d10 piercing 3 lb. Ammunition (range 30/90), loading

This weapon weighs half as much as a normal rapier and is fashioned of dark blue metal inscribed with images of spiders and webs.

Wondrous item, uncommon.
This magical explosive is used to propel a bullet out of the barrel of a firearm. It is stored in tiny, waterproof leather packets. A packet contains enough smokepowder for five shots. Casting dispel magic on smokepowder renders it permanently inert.
A character that keeps one of the firearms found [in Waterdeep: Dragon Heist], can thereafter purchase packet of smokepowder for 50 gp by a character. Any quantity of smokepowder counts as one single permanent magic item towards your magic item limit.
Smokepowder isn’t suitable for any purpose other to fire this weapon (i.e. NO explosives may be crafted, etc).