Okay, so this is only a great idea if your little one doesn't put these things in their mouth. With us, that's 99% of the time, and only once out of every hundred times does she actually try to eat these. So, what are they??? The caps from the easy-squeezy-baby-food-pouches. They come in a variety of colors and are free with the purchase of the baby food.
....and they can often be found ALL OVER the living room floor.
Daddy hates this game.