Here in civilized America? Cash, credit card, and cell phone (always on my person in case I get "separated from the bike"). That's enough IMHO.
I'd love a SPOT tracker just to be on the safe side, but in the interim, if I ever go into more remote areas I just "file a flight plan" with the GF, let her know the approximate area where I'm riding so in case I don't show up she can send the cavalry.
Otherwise, I have my roll-up tool bag in the bottom of my frunk:
http://www.amazon.com/Custom-Leathe...ref=sr_1_1?s=hi&ie=UTF8&qid=1347996398&sr=1-1 :thumbup:
In it I include the following:
1. The stock RS BRP tool bag contents
2. A socket wrench with assorted sockets/screwdriver heads (yay torx!)
3. Assorted crescent wrenches
4. Grip pliers
5. Needlenose pliers
6. Multi-head screwdriver and assorted allen wrenches
7. Zip ties
8. Electrical tape and assorted posi-taps
9. Loctite
10. WD-40
11. LED headlamp
12. Leatherman multi-tool
13. A tire gauge or two
Probably a few other things in there too, but that's been enough to get me through every bit of work I've ever needed to do on the Spyder, both in the field and at home.