Here is my list... it is long but I live by this list when getting ready to go camping. I do delete/cross off items that I will not need on a certian trip.
Shelter and Bedding
__ blanket
__ chairs
__ mallet/hammer
__ mat/air mattress
__ pillow
__ rug
__ sleeping bag
__ small folding table
__ table cloth
__ tent/poles/stakes
__ tarp
Clothes
__ hat/cap
__ jeans/pants
__ laundry bag
__ rain poncho
__ shoes/boots
__ shorts
__ socks
__ sweater/jacket
__ swim suit
__ t-shirts
__ underwear
Personal Hygiene
__ toothbrush
__ toothpaste
__ washcloth
__ towel
__ soap
__ comb/brush
__ nail clippers
__ razor
__ toilet paper
__ insect repellent
__ sun screen
__ tissues
__ chap-stick/lip balm
Food (keep all food in the car locked, helps keeps animals away)
__ cooler
__ bread
__ butter
__ cheese
__ fruit
__ ketchup
__ meat (sandwich, hamburger, brat and so on)
__ mustard
__ snacks
__ vegetables
__ water/juice/tea/coffee
__ ice (Freeze water in empty water bottles and plastic milk cartons. Be sure to only fill each container 3/4 full because of expansion. Place the frozen containers in your cooler to keep your food fresh, and when the ice starts to melt it can be used for cooking and drinking)
Cleaning Items
__ small broom/dust pan
__ dish pan
__ dish soap
__ dish rags
__ pot scrubber
__ paper towels
__ plastic trash bags
Chuck Box Items
__ salt and pepper
__ seasonings
__ cooking oil
__ pot holders
__ can opener
__ matches/lighter
__ tongs and spatula
__ aluminum foil
__ measuring cups
__ plastic silverware
__ paper plates/bowls
__ plastic cups
__ pie iron(s)
__ hot dog sticks
__ zip lock bags
__ knives
__ cutting board
__ bottle opener/corkscrew
__ knife
__ big spoon
__ grill & propane
Miscellaneous Items
__ binoculars
__ bird guide
__ bungi cords
__ camera
__ candles
__ cards, games
__ cell phone
__ clothes pins
__ compass
__ duct tape
__ fishing gear
__ flashlight/latern
__ Frisbee
__ pen and paper
__ rope
__ whistle
__ first aid kit
__ sewing kit
__ clasping backpack
__ radio