Kimba, you can't go wrong by buying a couple of boxes of 2.5 gallon slide-lock bags (they come a dozen to a box) and sliding your family/financial records into them now, long before the storm. The bags won't hold a huge picture album, but most other papers and books will fit. While packing them, you will probably come to some conclusions about what to take and what to leave.
If you're going to stay (or might possibly stay) consider some duct tape and contractor-grade black garbage bags, if you can still get them. Among other things, you can line the toilet bowl with a bag, taping it in place, and collect your waste without using water to flush with. This is far more comfortable (and less likely to tip over) than a toilet made out of a five-gallon bucket. Being able to close off and replace a bag every day will do wonders for the liveability of a house without running water. A container of baby wipes can also be a low-cost, high-return item.
If you get the duct tape, drawing some Xes on the windows--all upstairs windows and the downstairs on the most exposed side may help cleanup, even if you're not personally responsible for dealing with any broken glass.
For more money, you can use a construction site boom box to power your phones, fans, router, and other small items. Ours has been great in the last few blackouts. Way cheaper and safer (and quieter, and less stinky) than a gas generator. Less powerful too, but that's your trade-off.