My 2.5 year old son is the same way. We found that these work for his room:
http://www.onestepahead.com/product/67182/77/117.htmlHe can take off the plug-in style outlet covers easily, but there's nothing he can do for these. Even when we have something plugged in, when he pulls it out he can't get it back in.
When he was one he conquered the cabinet locks (luckily nothing was in there that could hurt him). One of his recent conquests have been the doorknob covers:
http://www.onestepahead.com/product/67184/150780/117.htmlHe simply breaks them apart and opens the door. We've tried taping them with a heavy tape, but it took about 3 minutes for the tape to come off and the door to be open. I'm thinking of checking out some of the other products that are out there, like this one that I just saw, for doorknobs:
http://www.onestepahead.com/product/67184/307761/117.htmlHe doesn't wake us when he's up in the morning, and he is always up pretty early. It scares me to have him running around the house at 2 years of age unsupervised. Especially since he can unlock and open the front door and back door with ease. And he's also my climber ... he'll be the one that gives me the heart attack in my 30's.
Good luck with your little guy!