The Ridgid SeeSnake micro places a camera at the end of a 3-foot flexible cable and displays the video on a built-in 2.4-inch screen. By buying extensions the cable can be lengthened up to 30 feet and will remain fully waterproof up to 10. Various attachments can be placed on the end, including a small mirror, a hook, and a magnet.
It's $240. Use code "COURIC" for a 0% discount.