Here is a video of me using one to clean my cutting mat before starting a new project. You won't believe how dirty it was even after I had already cleaned it off.
This can be used for a dozen other things as well. I clean my throw rugs in my sewing room with it when I don't feel like dragging out the vacuum.
I clean off the seats of the chairs.
I tried rolling it over our cat, Bootsy, but it didn't work at all for that. He wasn't too excited about the process either!