Originally Posted by kenshinvt

Go the park tool website and look at how a chain is joined. Don't bother taking a master link, just take a chain tool. You can shorten your chain a link and rebind it using just the chain tool. You may not be able to ride in the big-big combo, but that will still get you home.

Also, I don't know if it's really necessary to bring a spare spoke unless you are touring or something long distance.