I shave my ears.
Not every day. But every 10 days or two weeks I need to cut back those annoying dark hairs that grow on my ears.
Nowadays I use whichever DE razor has a blade loaded in it. Years ago, I used an electric razor for the job. Between the razor head and the sideburn attachment, it did a pretty good job -- definitely better than it did on my face.
The DE is adequate for this task, but it doesn't get into every area, and watch out for nicks! A nick on the ear bleeds like mad, is tricky to styptic for some reason, and takes a week or so to heal.
I'll ask for true confessions here: who else shaves their ears, and what works well for you?