TECHNOLOGY FOCUS - MECHANICAL ENGINEERING - Preferred Components: The inlet comprises a box-like chute provided on a rear wall portion with a cylindrical coupling adapted to be located, in use, in a circular opening provided in the upstream end wall (16) of the drum to support the inlet. The coupling comprises an annular flange located, in use, inside the rotatable drum and against an inside surface of the upstream end wall of the drum to retain the box-like chute. The drum provides support, at its downstream end (18), for a receptacle (20) for composted organic material. The receptacle, which is of box-shaped configuration, is received, in use, in a complementary shaped opening defined by a configured portion of the downstream end wall of the drum. The arrangement is such that, when the composter is in use, the receptacle lies in a normal upright condition when the rotatable drum is in a starting position. The receptacle is rotated through 360degrees with the drum until it is once again in its normal upright condition to enable the removal of the receptacle and its composted contents. The drum comprises a lower trough-like portion (6) and an upper inverted trough-like portion (8). The upstream end wall is provided by aligned planar portions of each trough-like portion. The circular opening providing the support for the inlet comprises a half-circle in each of the aligned planar portions of each upstream end wall. An axis of the circular opening in the upstream end wall is arranged to be coincident or with the longitudinal axis of the rotatable drum. The rotatable drum is in the form of a polygon in cross-section. It has ten sides (4a-4c, 4f, 4h-4j). The rotatable drum is provided with perforations to facilitate the drainage of leachate. It is supported on a drainage tank (10) for leachate. The composter is configured to look like a farmyard animal or a wild animal.    TECHNOLOGY FOCUS - POLYMERS - Preferred Materials: The rotatable drum and the inlet are made from plastics material. The receptacle is molded from plastic material. The drainage tank is molded from a plastics material.