You can play games with your friends: who can spin the marble the fastest without loosing it. Or you can move the bowl slowly and then fast and see how the marble reacts, and where it will be on the inside of the bowl, low or high. Have fun …

Follow the steps below and you end up with an interesting toy that demonstrates how the centrifugal force on the marble pushes it higher in bowl the faster you spin it. Or you can make it go slower and see what happens.