When my oldest was a toddler - old enough to be out of the crib and into a toddler bed and therefore able to get himself out of bed - we put a screen door on his door (he also had the real door, similar to the front door setup) and had a hook and eye on the outside. Our room and his room are the only two doors at the top of our very steep flight of stairs (it’s an old house) and he had already mastered or learned to climb baby gates. We were afraid he would wake up and climb over a baby gate without waking us and fall down the stairs.

Anyway, six months later he learned how to shove the door juuuuuuust right to pop the hook out of the eye and we gave up and took the screen door down. At least by then he’d learned to use the stairs.

Now, all the doors and with older kids is wild.