D&D scenery: Stone Urn for Tomb of Annihilation

Fenthasa's Quarters (area 5) in the Fane of the Night Serpent within the D&D adventure Tomb of Annihilation (TOA) contains a Storn Urn in which an Air Elemental is contained. The urn is described to be 4 ft tall, 250 pounds heavy with a 25 pounds stone lid. It is covered with snake carvings.

Looking for a suitable base model for variatins, I found ecaroth's Urn of the Five Thousand Voices, originally an elaborate Mimic model: https://www.thingiverse.com/thing:3176596
This model already has