Sometimes, when you're sneaking around and trying to figure out what's going inside a locked room, you need more than a cup to hold up to the door to try to listen in. You need to see the action. Unless you're Superman, you'll need a bit of help to do that.
The Under-Door Remote Viewing kit is a tiny camera that can be slid under a door and will display what it sees on the handheld screen. It also includes night vision and an infrared LED emitter to let you see inside even when it's dark, it has a wide enough angle that you can see everything from the floor to the ceiling. So hurry up and get it before Christmas rolls around again; your mom won't wrap presents without you knowing what's going on ever again.