Beakers are a distinctive group of pots belonging to the late Neolithic and early Bronze Age. They are usually found in graves accompanying inhumations. It is unknown what beakers held - various liquids and syrups are suggested. They are often found in graves and cists with other grave goods, including jet buttons and flint arrowheads. Antiquarians used to think that beakers were brought to Britain by a migration of people known as 'The Beaker People'. More recently, others think that the beakers were simply exchanged for other precious objects. Classifications by shape and decoration have been devised for standardised descriptions, e.g. bell beaker shape or All Over Cord decoration (AOC).