Looking for decent backup, I came across this connector and very happy with it. Our daughter (1 year) she gets not remove the outlet and is completely secure, no holes or the like. However, if you even needed the AC outlet, you can easily by means of a plug (the one then anyway has at hand, because you want him Plug) extract.
Much better than the solution with key (which you then have to first dig out) and as these (already cheap-looking) Adhesive Pads, where I never had the confidence that a child they do not yet out desk.
