A support structure that may be used as a seat, table or step stool has a top panel substantially 10".times.18" secured between two angled panels substantially 10" above the floor. A pair of normally vertical support members extend between the end panels in contact with the bottom of the top panel and are each formed with a groove that accommodates a tension rod fastened between the end panels. A handle opening is formed near the top of each end panel. The end panels are formed with legs that project beyond the projection of the top panel as seen from the top, both longitudinally and transversely.