My grandma had something like this when I was a kid. It had a wheel on the end of it, like a dremel tool! She kept it by her chair in the living room and used it regularly. She often manicured her nails while watching her crime shows! She values hair/nails and makeup. I suppose for her it could have been a cheap option instead of getting her nails done at a salon. It seems pretty silly to me! She uses a regular nail file now. I'll have to ask her when it wore out. I am sure that she had it for ten or more years. She may have also gotten it free or from a points or rewards system. Grandma is very good at playing points games!