This is a well known list in the survivalist world but thought I may as well repost it here:
These are the 100 items that disappear first in an emergency.
2. Water Filters/Purifiers
3. Portable Toilets
4. Seasoned Firewood (About $100+ per cord; wood takes 6 - 12 mos. to become dried, for home uses.)
5. Lamp Oil, Wicks, Lamps
6. Coleman Fuel
7. Guns, Ammunition, Pepper Spray, Knives, Clubs, Bats & Slingshots
8. Hand-Can openers & hand egg beaters, whisks.
9. Honey/Syrups/white, brown sugars
10. Rice - Beans - Wheat
11. Vegetable oil (for cooking)
12. Charcoal & Lighter fluid
13. Water containers
14. Mini Heater head (Propane)
15. Grain Grinder (hand-operated, Non-electric)
16. Propane Cylinders
17. Survival Guides
18. Mantles: Aladdin, Coleman, etc. (Without this item, longer-term lighting is difficult.)
19. Baby Supplies: Diapers/formula/ointments/aspirin, etc
20. Washboards, Mop Bucket w/wringer (for Laundry)
21. Cookstoves (Propane, Coleman & Kerosene)
23. Propane Cylinder Handle-Holder
24. Feminine Hygiene/Haircare/Skin products
25. Thermal underwear (Tops and bottoms)
26. Bow saws, axes and hatchets & Wedges (also, honing oil)
27. Aluminum foil Reg. & Hvy. Duty
28. Gasoline containers (Plastic or Metal)
29. Garbage bags (Impossible to have too many.)
30. Toilet Paper, Kleenex, paper towels (Also impossible to have too much).
31. Milk - Powdered & Condensed (Shake liquid every 3 to 4 months.)
32. Garden seeds (Non-hybrid)
33. Clothes pins/line/hangers (A MUST)
34. Coleman's Pump Repair Kit: 1(800) 835-3278
35. Tuna Fish
36. Fire extinguishers
37. First aid kits
39. Garlic, spices & vinegar, baking supplies
40. BIG DOGS (and plenty of dog food)
41. Flour, yeast & salt
42. Matches "Strike Anywhere" are best. Boxed, wooden matches will go first.
43. Writing paper/pads/pencils/solar calculators
44. Insulated ice chests (good for keeping items from freezing in Wintertime)
45. Workboots, belts, Levis & durable shirts
46. Flashlights/LIGHTSTICKS & torches.
47. Journals, Diaries & Scrapbooks (Jot down ideas, feelings, experiences, preserve Historic times!)
48. Garbage cans, Plastic
49. Men's Hygiene: Shampoo, Toothbrush/paste, Mouthwash/floss, nail clippers,etc
50. Cast iron cookware (sturdy, efficient)
51. Fishing supplies/tools
52. Mosquito coils/repellent sprays/creams
53. Duct tape
56. Laundry detergent (Liquid)
57. Backpacks & Duffle bags
58. Garden tools & supplies
59. Scissors, fabrics & sewing supplies
60. Canned Fruits, Veggies, Soups, stews, etc.
62. Canning supplies (Jars/lids/wax)
63. Knives & Sharpening tools: files, stones, steel
64. Bicycles...Tires/tubes/pumps/chains, etc.
65. Sleeping bags & blankets/pillows/mats
66. Carbon Monoxide Alarm (battery powered)
67. Board Games Cards, Dice
68. d-Con Rat poison, MOUSE PRUFE II, Roach Killer
69. Mousetraps, Ant traps & cockroach magnets
70. Paper plates/cups/utensils
71. Baby Wipes, oils, waterless & Anti-bacterial soap.
72. Rain gear, rubberized boots, etc.
73. Shaving supplies (razors & creams, talc, after shave)
74. Hand pumps & siphons (for water and for fuels)
75. Soysauce, vinegar, boullions/gravy/soup base
76. Reading glasses
77. Hot Chocolate/Cocoa/Tang/Punch (water enhancers)
78. "Survival-in-a-Can" type kits.
79. Woolen clothing, scarves/ear-muffs/mittens
80. Boy Scout Handbook (also, Leader's Catalog)
81. Roll-on Window Insulation Kits
82. Graham crackers, saltines, pretzels, Trail mix/Jerky
83. Popcorn, Peanut Butter, Nuts
84. Socks, Underwear, T-shirts, etc. (extras)
85. Lumber (all types)
86. Wagons & carts (for transport to & from open Flea markets)
87. Cots & Inflatable mattresses (for extra guests)
88. Gloves: Work/warming/gardening, etc.
89. Lantern Hangers
90. Screen Patches, glue, nails, screws, nuts & bolts
95. Paraffin wax
96. Glue, nails, nuts, bolts, screws, etc.
97. Chewing gum/candies
98. Atomizers & spray bottles (for cooling/bathing)
99. Hats & cotton neckerchiefs