Tanglefoot bag

A tanglefoot bag is a small sack filled with tar, resin, and other sticky substances.

Description
A tanglefoot bag can be thrown to a point up to 30 feet away, at which point it bursts on impact and covers the ground in a 10-foot radius with sticky goo. For one minute, that area is difficult terrain. Any creature that was in the area of the goo when the bag was thrown must succeed on a Strength saving throw or be restrained by the goo. A restrained creature can use its action to make a Strength check, freeing itself on a success.

Campaign Two: The Mighty Nein
Nott purchased the materials to make a tanglefoot bag at Natural Remedies in Trostenwald while the Mighty Nein were first taveling towards the Menagerie Coast. Later while battling The Laughing Hand within the King's Cage, she attempted to entagle him with the bag. The Laughing Hand however broke free from the bag's goo.

Campaign Three: Bells Hells
In preparations for the heist of the lapis earring of the mythic djinn Harudan in the Twilight Mirror Museum, the group of adventurers called The Verdict purchased three tanglefoot bags. That same day, Orym of Bells Hells bought a single tanglefoot bag for the same reason.