Here is an inexpensive camera for looking into areas you might not want to stick your hand or face into. It is wifi connected to your smartphone. You will need a 12v battery. I plan to mount it on a long pole. Nice thing about it is it can record video if you like, similar a GoPro camera, not as good of quality picture but it will focus 1 cm -- 50 m and works in low light. You don't have to record with it, just view it live on your smartphone.
https://www.ebay.com/itm/12482057007...MAAOSwLmtg9oXo