no multitools. they often have tools/bits that aren't needed, and the swiss-army-folditinto case can weigh more than the tools themselves.

i used to carry a pedal wrench, until discovered pedals can be removed with a hex key.

and no more cone wrenches, neither! a couple nails and my 6" crescent (for the cassette tool) works.

parts/spares i carry (laos/cambodia/jungle): folding tire, 2 tubes + patch kit, 4-5 spokes and a couple nipples, set of wheel bearing cartridges (went bad last tour with no replacements available), short section of chain (5-6 links) and qwik-links, der+brk cables (long with the appropriate nubs cut off!), bb5 pads (rear, no longer take the front v-pads), derailler hanger.
and of course misc nuts+bolts, duck tape, erectrical tape, zip-ties, a length of coated wire, 2g tube of super glue...........