Originally Posted by froze
Some people I know carry a fiber spoke or two in case a spoke breaks but I never had a problem with that so I don't.
Also some people carry a spare chain link, but again I don't since I never broke a chain. Also if you chain did break you can reassemble the chain with one less link which means you may not be able to use your largest or smallest gear but the middle gears will work just fine.
good post froze! I'll add that like you, I haven't had a problem with needing spare spokes. Even when I had a set of wheels with carbon spokes for my MTB and would routinely break a couple on the rear wheel while riding, I could always finish the ride (albeit a little more slowly) and just get it fixed afterwards.
I do carry a MTB tube when I ride, but I use a Camelbak so the space isn't really an issue for me.
Oh, (for the original poster) and don't forget to carry a chain tool to fix that broken chain (unless it's included with the multi-tool you get.