What kit of spares/tools to people take with them when riding? I've got myself a Camelbak and looking to build a 'biking' tool kit for it.
kinda like the question "what kind of spares and tools should I take in my 4wd and camper?"
the answer for this is also... "it will depend on how remote you're going" and what your personal level of bicycle mechanical expertise is.
For an all dayer in the Blue Mountains, or a day out in Glenrock (up Newcastle way) at a bare minimum I'd carry:
a) 1 x spare tube + patch kit (yes, even if you're running tubeless)
b) 2 x tyre levers (to get the tyre off)
c) mini pump or C02 canisters (I usually have both)
d) multi tool with most of the sizes for your own bike on it. So all allen keys and torx if required. Plus, make sure it has, and you know how to use, a chain breaker.
e) Chain joining superlink (talk to your local shop)
f) ductape and zipties
g) basic first aid kit
I'm also partial to:
h) lightweight rain jacket windproof shell (I've spent the night in Glenrock once with a stuffed knee)
i) Leatherman
j) snack/energy bar
j) my phone/camera
I also had my wife make up a (larger than you actually need) bag in a bright blue fabric with velcro top and a velcro strap to wrap around it. This is handy as it gives you a place to lay tools out on the side of the trail when you're working on your bike. The bright colour makes it less likely that you'll lose something. You wouldn't believe how many tools, phones, pumps and more I've found on the side of the trail over the years from people fixing a problem and forgetting things...
For my tour up Cape York and along the Gibb, I also carried...
a hyper cracker (let's you remove your rear cassette to replace broken spokes on the drive side)
spare spokes and nipples
spare bolts, nuts and washers
spare gear cable
spare folding tyre
chain lube and grease
FibreFix kevlar spoke
ummmm... I'm sure there is more that I can't think of now...