There's an easy way to improve the endoscope camera.
Tape or zip tie about 3 or more feet of 10 gauge bare copper wire to it.
It will give shape and stiffness to it when you need to shove it up and around places.
You can prebend it whenever necessary, even folding it up to store it.
I added a black stripe with a Sharpie to indicate the top of the camera's view.
It helps when starting to push it into a dark and unfamiliar place so you can make sense of what you're seeing on the computer's screen
They are also waterproof.
I used mine on a delivery
when we had caught something on the boat's saildrive
It was the middle of the night and no wind
, so the LED's on the camera came in very handy.
BTW, buy one with a LOOOONG cord. Mine is 15 feet long and I'm glad for it.
Splicing a USB cord if you need to put it underwater is a no no.