Frowning with concentration at a low table, a clutch of overall-clad toddlers set about their task: stamping potatoes into paints to create rainbow-bright artworks.
As is to be expected, among them are several grown-ups, their job being to keep the peace and generally make sure that the paint ends up on the paper (as opposed to their faces).
Despite appearances, these adults are not qualified child-care staff — but parents who are involved in one of Tokyo's first cooperative English-Japanese preschools: Honey Tree Tots.