Small Bombs (5e Equipment)
From D&D Wiki
Cost: 25gp Per Bomb
Small round metal spheres with a small wick on top. You use your action to light and throw one of the small bombs.
Creation: 1 pound of iron, gunpowder, and a wick made of string or cloth.
Make a ranged attack roll, on a hit the target takes 1d6 fire damage and 1 d6 bludgeoning damage.
You can hold up to four in your hand (Medium creature). Take your action and bonus action to light and throw all four. Making one attack roll for all four.