Make wireless camera hidden and discreet?

I am hiring a babysitter for my 13 months old child and planning to monitor (when i am at work) via wireless internet video camera in my apartment. Unfortunately, the wireless internet camera is 4" x 2" and not discreet. I am looking for an suggestion to make the camera DISCREET. if you have an idea, please let me know. thanks.

I am thinking to put the camera inside the speaker box and hang it on the wall to have overal view. But, there is no way that i can hide the powerline from outlet(near bottom) to the camera (top of ceiling). I can't break the wall either because i am renting