I have been pleased with the quality of the P22's. They're fairly accurate (for only having a 3 inch barrel), compact, and look AWESOME. They tend to be picky on ammunition (at first, until you get a few bricks of cheap 22 through them) but after a thousand rounds or so, it will take any ammo...
I think the best options would be 1. stay at home as long as possible. 2. drive to somewhere you plan to go in your car (with all food/BOB equipment), if you have to "keep driving" to avoid any kind of disaster situation, and eventually run out of gas (after 300 miles or so depending how large...
I usually bring cash + credit card. If they try to charge an extra fee for paying with CC, then I just pay cash, if not, I put everything on credit for rewards :)
I just saw that episode on cops two nights ago! The lady called the cops because she paid 20 dollars for crack and the guy took the money and didn't give her anything, then told her to get off his property, though he "claimed" he never told her he had any drugs.
Baby wipes.. that's an interesting idea! I have always vacuum sealed TP rolls. Baby wipes would make much more sense. Do you think they would keep their 'moisture' over several years of storage?