There is thread on this topic a couple of pages down that has some good info on this. I'd paste a link if I knew how, but found it using the search tool provided by this forum.
I've already got a tool chest full of tools, but if you are starting from scratch Advrider sells some tool rolls specifically for a given bike. Otherwise you have to keep track of what you use doing routine maintenance and use that list to pack up a bag 'o tools for a trip.
Day rides I've got my AAA Plus card and a cell phone.
2010 Ducati 696 Monster