I like looking over these cheap sites for products. Most are out of China. Don't like buying there, but everything comes from there anyways, so why pay so much locally for the same product.
I saw this and bought it. Figuring it would be nice to have, to find lost parts, inspect where I can't go myself, looking around corners. Little things like that. It was only for $16 CAD.
5M 6-LED 5.5mm Lens IP67 Waterproof Android Video Endoscope Borescope Snake USB Inspection Camera
http://www.tmart.com/5M-6-LED-5-5mm-Lens-IP67-Waterproof-Android-Video-Endoscope-Borescope-Snake-USB-Inspection-Camera_p341547.htmlIt has a USB connection, and plugs into your Android cell, tablet or lap top, as the viewing screen.
I figure I'll use it to look over the top of the Valk engine, behind the air tubes for the vacuum nipples, looking for the o-ring signs of leaking.
Only thing is, expected delivery in 7 days, usually works into up to 3 months. I used to buy from Deal Extreme, but the Tmart prices a little cheaper.