Rover Spy Tank
While it's not the most inconspicuous spy gadget we've ever seen, the Rover Spy Tank ($150) should do just enough to let you be the Ethan Hunt of your abode. Controlled by an app that works with your iPad, iPhone or iPod Touch, the tank has a camera that streams live video and takes still photos, while a built-in microphone transmits sound back to you. It has a wireless range of up to 200 feet, plus infrared night vision for late night missions.