I've got a friend who I had helped build a bunch of open bookshelves for his house about a year ago. He and his wife just got a new puppy and it's gotten in the habit of lifting his leg on the bookshelves. My friend wants to retrofit his bookshelves with some kind of door on the bottom shelf to keep the puppy from ruining whatever he's got down there, mostly books and DVDs. I immediately thought sliding doors, but since these are bookshelves that are already finished, cutting slots all the way from end to end is going to be difficult. Any ideas?
And before someone suggests that they just take things off the shelves until the puppy is housebroken, his wife is also pregnant, expecting sometime in April, so these are going to serve a double purpose, keeping little fingers off things they shouldn't be playing with too.