The categories listed below are a range of services to exchange on an offering or require basis. Some of the categories will break down to sub categories providing more choice. Suggestions on exchanges could be a plasterer in the building trade can exchange a days work with a painter. The plasterer will then plaster the painters house and the painter will paint the plasterers house or the plasterer could plaster a tattoo artists shop and the tattoo artist can create tattoo work for the plasterer.