Pipe of Smoke Monsters

From Xanathar's Guide to Everything, page 138; and The Wild Beyond the Witchlight, page 212.

Description
Wondrous item, common

While smoking this pipe, you can use an action to exhale a puff of smoke that takes the form of a single creature, such as a dragon, a flumph, or a froghemoth. The form must be small enough to fit in a 1-foot cube and loses its shape after a few seconds, becoming an ordinary puff of smoke.