free #spelljammer idea:
a dragonship crewed by hengeyokai (shapeshifters with human, animal and hybrid forms), and all but a skeleton crew is shapeshifted into their animal forms to save air during long voyages. the ship could be a flying cat cafe.
they get boarded by pirates. the pirates wander through the ship and see mostly cats lounging around and hissing at them. then the cats transform and the pirates are outnumbered by 100 angry crew, some in human and some in furry form.