I have a no cut trimmer for inside my ears and nose, i hate how fast hair grows in both of those places
I had one, but it stopped working and I haven't felt like plunking down another $10 for one when I already have a decent pair of small scissors.
For that fuzz on my neck I use the dog clippers to clean that up. A friend asked me, "Isn't that unhygienic?" I said, "No, our dog doesn't mind".
I've been doing it for years. I use a DE. Every second shave. I cut my own hair now. Shaving the back of my neck taught me how to use the mirrors.
I'm guessing you're one of those guys who can back up a truck with a trailer attached. I'll pull one but no pushing. Another skill I haven't put any points into. Man's gotta know his limitations.
A quick peek at Kevin's avatar and you can see the results of trying to shove clippers into your ear.
I wish I could say I was skilled but, really great only on the face lol! I am still learning how to work around my head - the sides are great - the top and back I usually finish with another razor.
Sometimes I'm tempted to try shaving my head with my razor, but I know my wife wouldn't be enthused. If my bald spot keeps getting bigger, though...