How do you carry the basics? Lock, purse etc

[Bike Writer]

I'm a pack rat and tend to take more stuff than I need. I find this trunk bag holds everything I want to take. Small tools, CO2 cartridges, vinly glove to keep my hand clean if I drop a chain, extra tube, flat kit, small vial of hand sanitizer, maps, pepper spray (for safety), a snack bar, small zippered wallet w/insurance card, id, money and I carry a couple of small bungees also to strap on bigger items or a rolled up jacket or vest.

If I'm shopping I'll carry panniers or if it's around town I'll carry my basket or both if I have a lot to get. But the trunk bag is for items I feel I can't do without.

http://www.rei.com/product/780460/no...sic-rack-trunk

Oh, and these must have alongs; blackberry and usually a small camera