I'm curious about the bore scope too.

I've only attended a few of the EAA meetings in Puyallup but that chapter has a very nice unit which is pretty amazing. You can stick in through a spark plug hole and then control the camera so well you can turn it around and inspect the valves.

A few years ago I bought an eBay item referred to as an endoscope, and I'm old enough to know what that is. The camera portion was easy to set up and drive from a beater laptop but the cord is just a floppy wire like a USB cable.
I didn't intended to use it as the name implies (I was trying to get a look at some very remotely mounted turbochargers). In order to get it to look where I needed it to I had to tape it to a stiff piece of wire and it took several tries to get the view I needed. It was cheap and I still have it but man that one the Puyallup chapter has would be the shiz.