For tools I put multitools in an MSR pack and wear it. I have a little tool pouch from Moose on the rear fender of the KDX but it mostly has spark plugs and a cool little plug wrench. A T-tool is awesome with an 8mm, 10mm, and 12mm socket, and Scott makes a mini ratchet that is awesome and light too. Allens, crescent, multi screwdriver, pliers, that is pretty much it. And a plug wrench for the XR, like it ever needs it. Might if I drowned it though!! Oh yeah, don't forget the epoxy putty, baling wire and duct tape.
Seriously. Fixed a BMW GS sump on the White Rim once with it. He rode it all the way back to Denver with nary a weep. Fixed the Thunderpig's clutch cover with it too, took 6 jagged parts and made one cover with a neat pattern in it. Epoxy putty is the schizz.
Heb Dduw, heb ddim; Duw a digon
I'm that gun-totin', farm-raised, evangelical, pro-environment, OHV ridin'/drivin', Southern civil rights pro-labor Liberal yo' momma told you couldn't possibly exist.