Green flag to start the animation.
This time I was really stuck because everything coming to my mind as a response to the prompt seemed to me either "not satisfying right now" (like having mirroring o symmetry effects) or "too undefined" (I started wondering about a project with tectonic plates generating either volcanoes or mountains), so I decided to mow the lawn instead. Then I looked in the gallery and found some inspiring projects: @mattioli2 and its rain animation, @CyberParra and its dirt-clean parallelism, @PhilippGerber and its self-driving cars animation but still nothing clicked. So I opened an empty project and asked for a random sprite and got a mouse. Then I thought "What can the mouse do? Move around, eat something, be chased by something, whatever" and then suddenly I realized that I had an old project I really liked because I had so much fun in doing it where a hedgehog (so a sprite "similar" to a mouse) was moving in a wood collecting leaves (the dirty-clean parallelism) as a part of an animation of an autumn wood. So I removed a third sprite from the original project (https://scratch.mit.edu/projects/286899230/ ) and fixed something. The project was originally made for CoderDojo Bologna as an "advanced" example for kids and then I also used as a prompt in a primary school for a "animate a biome" activity
