Kidproof?
Kid-tested, more like. We had a few of the durable ones near the bottom, but my son requisitioned them for other spots in the house. He is 18 months, a little over 2 foot tall and a bit of a terror. I caught him kicking open a present the other day.
My daughter is 4, and she's actually more difficult because she can reach much higher. She is better at following directions, but it still is tough to have anything breakable in her reach. I told my wife to put away any of the really sentimental ones for a few years.