Weight: 0.05 lb.
Estimated Value: 50 gp
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.
Source: Xanathar's Guide to Everything p138