Here's what I do.
Works well for very deep body plugs. The one's where there's no way yer ever going to get a swivel to reach the wire, not even with a split ring.
I do them out of quality stainless steel swivels and the same stainless wire I use for the through wire. (It's another use for your cut scraps of wire.) But I didn't have any finished ones around so for the sake of demonstration I just whipped this up quick out of a crap swivel and paper clip.