I can think of several times I've used or had need of a similar device. This is actually a cool option if you're in need of such....
The weirdest tool I own is also one of the most useful (and it's $14 on Amazon)
https://www.zdnet.com/article/the-weirdest-tool-i-own-is-also-one-of-the-most-useful-and-its-14-on-amazon/
"This tiny device was made to inspect ear canals, but it's surprisingly useful as a pocket-sized inspection tool for just about anything. ... .. The camera connects to iOS and Android, where you can see what the camera sees, take photos and videos, and control the light on the front. ... ..
Why I recommend this product
Let's get the price out of the way. This camera, including a charge cable and all the bits you're supposed to put in your ear (but that I will bin) is only $13. For that price, it makes this an excellent camera that I'm not scared of damaging. .... ..
I went recently to the hearing place to get the wax cleaned and the audiologist used something just like that(a bit different), it had a flexible neck, and projected the picture on a monitor so I could see what was there. For sticking things in your ears I would never do it...let the one that has the proper tool and expertise to do it.
@mark Just to clarify, the article is talking about using it for alternative uses, like so you can see what your doing while cleaning a USB port or something, examine bad connections or whatever.. and it's a lot cheaper than buying the mini cameras that are actually made for such purposes.
.. or you could just stick it in your ear too.