A step stool can serve multiple purposes. As well as being used to reach high places, it is a stool. Some are designed to look nice enough to be used as regular furnishings or furniture instead of being stored away in between uses. Also, a small step stool can be convenient for people who don't like to sit on the floor while doing activities that require being lower down than a normal chair. Many step stools will also provide extra, temporary seating. Some children prefer sitting on a step stool, and some step stools have a nice padded top level which makes them a great alternative to a highchair for children who are old enough to sit on a chair, but maybe a bit too short to reach the table where the family is eating comfortably.