Why didn't I think of this before?

We have metal closet doors in all our bedrooms and on a hall closet. They are heavy and were a pain to take off when we wanted to paint them all white soon after moving in to this house. But I came up with a use for them, too, and in this way they are so much better than wooden doors... magnets will stick to them! Caroline can work with her letter and animal magnets on this surface. I am envisioning further uses too - she has a magnetic calender that can hang on one of the knobs, and the extra pieces can stick to the door! They can stay out of baby sister's reach that way, too, if Caroline keeps them up high enough on the door!