This sounds like a good start.
Generators
Water Filters/Purifiers
Portable Toilets (Increasing in price every two months.)
Seasoned Firewood
Lamp Oil, Wicks, Lamps (First choice buy clear oil. If scarce, stockpile any!)
Coleman Fuel (Impossible to stockpile too much.)
Guns, Ammunition, Pepper Spray, Knives, Clubs, Bats and Slingshots
Hand-Can openers and hand egg beaters, whisks
Honey/Syrups/white, brown sugars
Rice - Beans - Wheat
Vegetable oil (for cooking)
Charcoal and Lighter fluid
Water containers (Urgent Item to obtain)
Propane Mini Heater head (Without this item, propane won't heat a room.)
Grain Grinder (Non-electric)
Propane Cylinders
Michael Hyatt's Y2K Survival Guide (BEST single y2k handbook for sound advice/tips.)
Mantles Aladdin, Coleman, etc. (Without this item, longer-term lighting is difficult.)
Baby Supplies Diapers/formula/ointments/aspirin, etc
Washboards, Mop Bucket w/wringer (for Laundry)
Cook stoves (Propane, Coleman and Kerosene)
Vitamins (Critical)
Propane Cylinder Handle-Holder (Urgent Small canister use is dangerous without this item.)
Feminine Hygiene/Haircare/Skin products
Thermal underwear (Tops and bottoms)
Bow saws, axes and hatchets and Wedges (also, honing oil)
Aluminum foil Reg. and Heavy. Duty (Great Cooking and Barter item)
Gasoline containers (Plastic or Metal)
Garbage bags (Impossible to have too many.)
Toilet Paper, Kleenex, paper towel
Milk - Powdered and Condensed (Shake liquid every 3 to 4 months.)
Garden seeds (Non-hybrid) (A MUST)
Clothes pins/line/hangers (A MUST)
Coleman's Pump Repair Kit 1(800) 835-3278
Tuna Fish (in oil)
Fire extinguishers (or.. large box of Baking soda in every room...)
First aid kits
Batteries (all sizes...buy furthest-out for Expiration Dates)
Garlic, spices and vinegar, baking supplies
BIG DOGS (and plenty of dog food)
Flour, yeast and salt
Matches ("Strike Anywhere" preferred. Boxed, wooden matches will go first.)
Writing paper/pads/pencils/solar calculators
Insulated ice chests (good for keeping items from freezing in Wintertime)
Work boots, belts, Levis and durable shirts
Flashlights/Light Sticks and torches, "No.76 Dietz" Lanterns
Journals, Diaries and Scrapbooks (Jot down ideas, feelings, experiences Historic times!)
Garbage cans Plastic (great for storage, water, transporting - if with wheels)
Men's Hygiene Shampoo, Toothbrush/paste, Mouthwash/floss, nail clippers, etc
Cast iron cookware (sturdy, efficient)
Fishing supplies/tools
Mosquito coils/repellent sprays/creams
Duct tape
Tarps/stakes/twine/nails/rope/spikes
Candles
Laundry detergent (Liquid)
Backpacks and Duffle bags
Garden tools and supplies
Scissors, fabrics and sewing supplies
Canned Fruits, Veggies, Soups, stews, etc.
Bleach (plain, NOT scented 4 to 6% sodium hypochlorite)
Canning supplies (Jars/lids/wax)
Knives and Sharpening tools files, stones, steel
Bicycles...Tires/tubes/pumps/chains, etc.
Sleeping bags and blankets/pillows/mats
Carbon Monoxide Alarm (battery powered)
Board Games Cards, Dice
d-Con Rat poison, MOUSE PRUFE II, Roach Killer
Mousetraps, Ant traps and cockroach magnets
Paper plates/cups/utensils (stock up, folks...)
Baby Wipes, oils, waterless and Anti-bacterial soap (saves a lot of water)
Rain gear, rubberized boots, etc.
Shaving supplies (razors and creams, talc, after shave)
Hand pumps and siphons (for water and for fuels)
Soy sauce, vinegar, bouillons/gravy/soup base
Reading glasses
Chocolate/Cocoa/Tang/Punch (water enhancers)
"Survival-in-a-Can"
Woolen clothing, scarves/ear-muffs/mittens
BSA - New 1998 - Boy Scout Handbook (also, Leader's Catalog)
Roll-on Window Insulation Kit (MANCO)
Graham crackers, saltines, pretzels, Trail mix/Jerky
Popcorn, Peanut Butter, Nuts
Socks, Underwear, T-shirts, etc. (extras)
Lumber (all types)
Wagons and carts (for transport to and from open Flea markets)
Cots and Inflatable Mattresses (for extra guests)
Gloves Work/warming/gardening, etc.
Lantern Hangers
Screen Patches, glue, nails, screws, nuts and bolts
Teas
Coffee
Cigarettes (Good for barter)
Wine/Liquors (for bribes, medicinal, etc.)
Paraffin wax
Glue, nails, nuts, bolts, screws, etc.
Chewing gum/candies
Atomizers (for cooling/bathing)
Hats and cotton neckerchiefs
Goats/chickens