If you’ve been reading us awhile, you may remember the hidden bookshelf door how-to from a few years back. Well, if you’re really into the idea but are too busy in your laboratory (pronounced “la-BOR-uh-tory,” of course) to take on a construction project, check out Creative Home Engineering, the subject of a recent article in Wired. They’ll build you hidden entrances and secret rooms to your heart’s content, including features such as “a door that opens when certain piano keys are pressed or when pieces on a chessboard are arranged just so.” I am both frightened and intrigued! — Mary T.