When I first got Sophie I always found her opening doors and cabinet drawers. I don't know what it is about them, but she loves anything that will open. We have to make sure we or anyone who visits shuts the door good when they come or go because Sophie is the expert at opening things and finding her way in...or out. It used to crack me up the way she'd figure out how to open things when she was little.
I guess old habits never die. She is a lot bigger now, but she still knows how to open things and find new hiding spots. Its always a game trying to find the cats before we leave to make sure they aren't stuck anywhere or hiding somewhere they shouldn't be. I love my silly smart cats.