Putting Marbles on a Frog

Don't you love my creative title?! I wasn't sure what to call this work so I just called it what it is. My mom brought a bath frog that's meant to stick to the bottom of the tub (O and Marg love to play with them in the bathtub at G & G's house), and I had a little glass dish of marbles. I showed O how to carefully pick up one marble and place it on the frog's suction cup. She was super excited and couldn't wait until it was her turn. She did a good job, although she needed prompting to pick up only one marble at a time. She was immediately ready to try it again, but after placing 2 marbles correctly she decided to throw the 3rd marble across the room. She clearly knew that was not acceptable (she was looking straight at me waiting on a reaction when she did it), so I calmly had her pick up the thrown marble and took the whole work away. She was very upset because she really wanted to "bay" (play) with the frog and marbles. Hopefully, she was upset enough to remember that we don't throw marbles! This is a work that she will do only under close supervision because there is a slight possibility that she may decide to taste a marble :)