Immerse the brilliant Plui toy in water to fill it up, then control the flow of water by sealing or opening the top nozzle with the tip of your finger… A trick that will have children experimenting with it in wonder for a good long bath time.

The Plui may look rather simplistic – a round ball in green, blue or yellow – but it is in fact an experimental tool that will have toddlers exploring the laws of physics without setting foot, well, out of the bath!

After all, how is it that the Plui will start pouring water when you take your finger away (doing nothing), and yet do nothing when you hold your finger on? It is an extremely simple yet inventive way of demonstrating all those principles of gravity that took so many human generations to be explained. Babies and toddlers never cease to be amazed by the whole cause-and-effect phenomenon, and just when the wonder may be waning for other items – the saucepan and wooden spoon, for example – along comes this cleverly designed object.

What we love… Oh (you will see your toddler ponder) where are the on and off buttons? This is non-technological toydom at its simple finest.

Designer Details Designed by Johanna Rickenbach and Alex Hochstrasser and manufactured by Moluk. Founded in 2011 by designer Alex Hochstrasser and his sister Doris Hochstrasser, an architect, Moluk is a family business that creates inventive, interactive and entertaining toys made from sustainable materials. They also are the creators of the multi-award winning Bilibo.