When a lid body (36) is opened, a side wall member (22) projects from an upper end face of a circumferential wall of a main body (12), and outside a cup portion (20), a wall portion (24) of the side wall member (22) rises. Specifically, a height of the wall portion (24) capable of supporting a side portion of a container (16) rises. Therefore, for a portion wherein the side wall member (22) rises, a depth of a supporting portion capable of supporting the container (16) is deepened.