Also on these boards
I've seen these Dutch doors used for a child's room or play room. Kind of like a baby gate so you can keep them from crawling all over the house but still be able to hear them playing.
A secured-to-the-wall half door instead of a wedged in baby gate. Interesting. Bonus is that it doesn't have to be permanent if you don't want it to be...unscrew it, patch things up. Voila!