This was my idea for the dominant fungal life form on planet zero. The rock is inanimate matter, but the pale slime mold on it's surface is semi sentient, and can constrict like tendons to give the fungal colony locomotion.

These images are out of order as a thumbnail of a rock is not very exciting. But it's meant to be a surprise reveal: walk past an innocuous rock, and then it get's up and walks away. I did a rough animation as proof of concept.