This may sound silly to some people, but people building thier succah have to be careful and respect the power in power tools.
A sheitel macher, who specializes in custom wigs, told me that every year, she had at least one or two people coming to her store to get payus because they aren’t careful with electric drills and their payus gets cought and PULLED OUT by the drill. She took care of a 9year old boy today who required stitches on his face and may never grow hair on the side of his face again. I can imagine his mother telling him not to touch, but he is a young boy. The drill was obviously left out and not protected enough. People must be careful.