hot wheels ranked number one toy for rolling down ramp knocking over dominoes that send marble down funnel dropping onto teeter totter that yanks on string causing pulley system to raise wooden block propelling series of twine rollers that unwind spring launching tennis ball across room inching tire down slope until it hits power switch activating table fan that blows toy ship with nail attached to it across kiddie pool popping water balloon that fills cup weighing down lever that forces basketball down track nudging broomstick on axis to rotate allowing golf ball to roll into sideways coffee mug which tumbles down row of hardcover books until handle catches hook attached to lever that causes wooden mallet to slam down on serving spoon catapulting small ball into cup attached by ribbon to lazy susan which spins until it pushes battery down incline plane tipping over salt shaker to season omelet