Fire Elemental I designed for a monthly gaming session, which is a rehash of a previous model. This can be used (or not) in conjunction with the fire elemental and sprite models in the links below, for some interesting mechanics.

https://www.thingiverse.com/thing:4384076

https://www.thingiverse.com/thing:4502417

This is quite a large model (80 mm high), so I've included an additional hollow model with drain holes, see Thing Files.