A "New" Toy

So, Carter has this one toy. He got it from Grandma Cindy's collection of toys at her house, so I like to call it a "throw back" toy. For the longest time, I just thought it was a rattle. Then, one day, several months back when Carter started the absolutely-everything-goes-in-my-mouth-phase, he got it in his mouth apparently just the right way, and exhaled. I heard a whistle, and was completely confused. Of course it was a total fluke, and by accident, he and I both discovered that this rattle is also a musical instrument! Well since that day I've been trying to get Carter to make this toy whistle again. Yesterday, he finally got it after I demonstrated for him (about a million times). He LOVES it and now has a new favorite toy! And he's pretty good at taking turns with me, too!