I have a small JR tank bag for camera, wallet and a few odds and ends and It works fine. There are a variety of brands and sized out there. I have a quite large Teknic bag that carries quite a bit in its standard set up. It expands upward to carry a whole pile of stuff, most of which you probably don't need to carry with you. You can actually rest your chin on it when it is fully expanded and full. I used this for almost two years but have since switched to a 75 liter back pack.
I've got the Interceptor (VFR) jacket and absolutely love it. It comes with a removeable liner, and the sleeves and mid section of the jacket remove for a partial mesh jacket. Like having 3 jackets in one.
I have this Joe Rocket Rocket Nation Magnetic Tank Bag :: New Enough Motorcycle Hard Parts JR tank bag. Its a great deal, magnets hold very well, and has enough room for wallet, cell, tire plug kit, two apples and an extra pair of gloves with room to spare.