I added a 6" crescent wrench wrapped in a shop rag, a good 10mm wrench in the same rag, some waterproof matches in a small case with shock absorbing padding so they'll actually work in an emergency, a 99 cent rain poncho and an emergency blanket to the stock tool kit. Also a battery tender wire back there, the battery tender jumper cable wire, and a few more rags.
All this aside from the manual and riding instruction book and my disk lock fits too.
I'll have to get pics or it didn't happen right?