A fun but 'useless' input field for controlling the audio volume. To set the volume, you must launch a tiny rocket into space. The height of the orbit determines the volume. It's not rocket science!
Read about it here: https://daniel-b-tufvesson.github.io/portfolio/volume-space-program/project-rocket-space-program.html
Try it out here: https://daniel-b-tufvesson.github.io/Volume-Space-Program/