One that I've never forgotten was of a finger with a wedding ring and a
long piece of string like stuff protruding from where it had been torn
from a hand.

Nice...

I've got two I can recount, but they're not strictly handyman
accidents.

When I was serving my apprenticeship, we did a bit of practical and a
bit of workshop - one of the lads in our year managed to lose a finger
while working on a lathe. I think he made the mistake of continuing to
use it while turning around to talk to someone...

The other was an office accident, and this might top them all (sadly)

This happened either just before I started orvery shortly afterwards
in another local office (now closed). We had some work experience kids
in with varying levels of handicap, and someone thought it would be
safe to let one of these kids use the shredder. Not even the
manufacturer believed you could get a whole hand in that far :-/