I have been doing overnights and weekend type trips so far and am learning that less is more the hard way. Standard newbie approach. However my first big trip down the Pacific coast is coming up at the end of Summer and I still have a problem...
I feel the need to carry parts and tools for most foreseeable issues that I or maybe someone else may have. Yes I'm the guy that not only will I give you the parts, if you let me I'll fix it for you. I could be wrong, but I want to see it done right and I think I can do it faster. Feel free to laugh away!
Some things are easy:
Cleat screws instead of whole replacement cleats. I can buy new ones when needed.
Fiber-spoke, instead of each spoke length and a hyper cracker.
One brake, and one shift cable instead of a full set of spares.
Other things I'm still trying to work out:
Universal emergency dérailleur hanger.
Spare tire as opposed to just a couple of tire boots.
Valve hole adapters Schrader to Presta.
Master links or pins for each different chain.
More tube patches than a sag wagon. I may not have your size tube, but I can fix it.
I know that there are a couple of other things that have escaped me at the moment... On one hand, I know I should keep shaving the weight. On the other, it's like trail karma and hopefully if I bring it I won't need it.
So... am I crazy, or would you be happy to see me roll up?