How do you do the craft lace thingys on a key ring?

Answer 1

See the site of the boondoggle man:
http://www.bluemoon.net/~dotoran/
or: http://www.boondoggleman.com/look_in_tin.htm

Or one of the other sites about it:
http://www.e-scoutcraft.com/braiding/braiding.html
http://www.makingfriends.com/lanyard_keyring_rwb.htm

Answer 2

Could you expand a little more on what you want to do? I f you mean crochet, you do single crochets through and around the ring and join with a slip st at the end and then carry on with a lacy pattern. somehow, I don't think this is what you want. sorry.