We also use Navcam to look at clouds above us (made of water ice and carbon dioxide ice). Sometimes these clouds cast shadows on the ground. @transmartian.bsky.social and Charissa Campbell have designed special movies to look for these shadows during the cloudier season on Mars.

Every other martian day ("sol") or so, we take a series of images with Navcam to look for dust being lifted off the surface. About ~half the time, these image sequences do see something!