Bar stools can range from a simple wooden top attached to four legs to shaped seats, or seats that closely resemble chairs on long legs. Not all stools sit on four braced legs. Some have only one leg that is attached to the base by a long screw or hydraulic lift that can be used to adjust the height of the stool. If that were not sufficient variation, bar stools can also be advertising for your establishment, for your favorite team, vehicle brand or drink. Angry with a politician? Decorate a stool with your arch-nemesis face.