I have read in the forums here of folks utilizing "A&P mechanics key rings" that said I searched for them and they seem to be about 2$ USD.
Now I also play a geolocation game called Munzee. And on their website they sell 6" stainless steel barrel cables, 6 for 6$ USD.
So I thought I'd share the link.
http://www.munzee.com/store/Stainless-Steel-Wires.html
Cheers X
Bookmarks