A few months ago, my mum fell from an old plastic stool while she was trying to reach for something on top of a cupboard and hurt her tail bone badly. The decade-old plastic stool just crumbled apart when she stood on it. She was in great pain and had to sit on an inflatable swimming tube whenever she sat on the chair. For weeks she could not even have a decent car ride as she would feel a stabbing pain on the tail bone when the car moved. I told her that she has to use a sturdy step stool for safety purpose in future. I am not sure if she has bought one. I must remind her to.