We've had this discussion! Currently I have a "toy box" in the shape of a treasure chest. It's very attractive and has a place for a lock. The problem is that it looks too tempting. It makes you want to open it and see what's inside. We'll have to disguise our toybox better when the child grows older, maybe figure out how to add a lock to our bedside table.
I also snooped in my parents room when I was a kid and at the age of 12. I discovered my mother's dirty magazines. The "Dear Penthouse Forum" style letters of "real sexual experiences" was entertaining to me. They couldn't fool a 12 year old. I knew that the stories were made up. I still remember one of the stories very vividly, one about a truck driver who meets a perfectly proportioned little person who comes onto him and who could take all of his cock without any problem, even though he was sure that it wasn't possible. As a child I thought the writing was terrible and the facts suspect, but I still thought it was titillating.