Finger and Brain Exercise Pythagoras Vehicle Set. These building blocks, made with colorful magnets of various shapes, promote the development of fine motor skills. Finger and Brain Exercise Pythagoras Vehicles Magnets that stick! Play now! 12 ways to exercise your fingers and brain: Shake, knock together, attach, detach, stack, line up, imagine, pretend, have an idea, create, think, and devise. The box is included, but due to high shipping costs, only six parts will be sent in simple packaging.