An organising system for a drawer, with a mat for arrangement in the drawer, wherein the mat has a holding structure on an upper face, wherein the holding structure has a plurality of elevations and intermediate spaces, wherein the elevations and intermediate spaces extend in a row alternately in a transverse direction and a longitudinal direction, with at least two receiving devices for receiving objects, wherein the two receiving devices are arranged adjacent to one other, and each have a mating structure which engages into individual intermediate spaces such that the receiving devices are secured against slipping on the mat, wherein the mating structure is formed by at least two opposite wall portions (16a, b) for supporting the receiving device on the mat as well as by at least one form-fitting contour arranged between the two wall portions (16a, b), wherein at least the form-fitting contour establishes a form fit with individual elevations in the longitudinal direction and in the transverse direction in an intersection region of intersecting intermediate spaces, characterised in that the receiving devices have at least one hooking portion and at least one receiving portion, wherein the at least one hooking portion is integrally formed on one of the wall portions (16a, b) at the side, and the at least one receiving portion is inserted into the opposite wall portion (16a, b) at the side, wherein the one receiving device is hooked, by the at least one hooking portion thereof, in the at least one receiving portion of the other receiving device, wherein the hooking portion of the one receiving device and the receiving portion of the other receiving device are engaged with one another in one of the intermediate spaces between two adjacent elevations. with a mat for arrangement in the drawer, wherein the mat has a holding structure on an upper face, wherein the holding structure has a plurality of elevations and intermediate spaces, wherein the elevations and intermediate spaces extend in a row alternately in a transverse direction and a longitudinal direction, with at least two receiving devices for receiving objects, wherein the two receiving devices are arranged adjacent to one other, and each have a mating structure which engages into individual intermediate spaces such that the receiving devices are secured against slipping on the mat, wherein the mating structure is formed by at least two opposite wall portions (16a, b) for supporting the receiving device on the mat as well as by at least one form-fitting contour arranged between the two wall portions (16a, b), wherein at least the form-fitting contour establishes a form fit with individual elevations in the longitudinal direction and in the transverse direction in an intersection region of intersecting intermediate spaces, characterised in that the receiving devices have at least one hooking portion and at least one receiving portion, wherein the at least one hooking portion is integrally formed on one of the wall portions (16a, b) at the side, and the at least one receiving portion is inserted into the opposite wall portion (16a, b) at the side, wherein the one receiving device is hooked, by the at least one hooking portion thereof, in the at least one receiving portion of the other receiving device, wherein the hooking portion of the one receiving device and the receiving portion of the other receiving device are engaged with one another in one of the intermediate spaces between two adjacent elevations.