So easy to do!
Start by showing the wood box, which has a round hole cut into the top and bottom.Put the steel ball into the hole through the lid- the ball drops right through the box.Next, open the box and place the plexiglass square inside.The plexiglass now covers the hole on the bottom of the box, preventing anything from passing through.Take the steel ball and drop it into the box through the hole in the lid.Sure enough, the plexiglass keeps the ball from dropping through the box.
But now the magic happens!Make a magical gesture, or say a magic word, or just concentrate-And PRESTO!At your command, the ball seems to penetrate right through the plexiglass and fall out of the bottom hole of the box!Just like magic!
And that's all you need!Box is made of wood.Box is about 2.5" square and 1.5" high.