This is a "short" list off the top of my head. Please bear in mind that I've been camping all my life, as well as being an Boy Scout Leader so my short list off the top of my head might be longer than others complete list.
Tent
tent poles
tent stakes
ground cloth
guide lines
tent stake hammer
tent rain fly
tent repair kit
cot
sleeping pad/thermorest
sleeping bag
pillow
screened-in room
screen room poles
screen room stakes
repair kit
table cloth
table cloth clips
clothes line
first aid kit
extra blankets
extra rope
extra stakes
dutch oven
charcoal
lighter fluid
waterproof matches
lighter
grill
lamp
propane bottles
propane lamp mantles
cooler
water buffalo
kitchen utinsels for prep work/cooking
plates
silverware
bowls
drinking cup/mug
coffee pot
wash basin
dish soap
OFF!!!!
citranela candles
flashlights
extra light bulbs
extra batteries
shovel
hatchet
pocket knife
Yes, that is my SHORT list. Took me 5 mintues. Now if you wanted to be creative or is space is a problem, there are some items that can serve more than one purpose. That list also doesn't include whatever personal items you need, like toleteries, clothing, raincoats, etc, etc. I wouldn't necissarily bring all of that to WDW, but for any other campout I would definatly make sure I have at the very least that list. Please feel free to add to it, or if anyone has any questions please ask.