When I am leaving the house with gear I use my Cortech backpack. It's got some neat features and has a fold out helmet bag to keep from knicking up your lid when it's not on your head. It's also a great way for me to carry a second helmet when I am going to pickup my wife for a ride.
For quick errands I keep one of those drawstring backpacks under the pillion seat. It's great for things you don't want to bother getting the cargo net out for.
John
NESBA #218
CBR 600 F4i
Built it Frame-up.
Gear: Shoei X11 Bostrom Rep, Teknic Chicane Jacket, Teknic Violator Gloves, Sidi Vertebra Race Boots, Teknic Speedstar Suit
Mods: Scorpion Carbon High Mount, PCIII, Supersport Undertail, CA Integrated LED Taillight, Targa Cowl, LP Short Stalks, Pyramid Hugger, Shogun Frame and Bar sliders, Corbin Saddle.