Noosum Foosum - J. M. Harris

Noosum Foosum tells the story of Katie and Danny, who discover a secret path through the woods near their home.
At the path's end they find a stream, and there, resting on the water, they notice a tiny toy boat. As the children examine the boat more and more closely, it becomes obvious to them that this is no ordinary toy boat. And they are right. Because this boat is special. Very special indeed. Because this boat belongs to none other than Noosum Foosum! Noosum Foosum - the fabled engineer and inventor, whose name is legend, whom no-one has met ever before. The children long to explore the boat and meet its owner - but how can they when it's so small? Fortunately for them,they have chanced upon a world that is also inhabited by a friendly dragon, a dragon with the power to grant wishes,even their wish to be small enough to board a tiny boat...