Do you have some crazy inventions up your sleeve?This book is jam-packed with Andrew Rae's amazing drawings showing all sorts of real inventions that seem too weird to work. How about a dog umbrella? A submarine that looks like a plane... or even a shark. A swimming machine where you don't get wet? A car wash for people? Someone has even made a device to charge your phone using a hamster!There is plenty of inspiration to get kids' minds going, and plenty of room to add their own crazy invention ...