Came across this and thougth it was worth posting since there are quite a few girls competing for the first time. Please add to the list!
Towel
Food/Supplements
Utensils
Clothes to change into
Warm-up
Hair Spray
Visine
Make-up
Fake eyelashes and tweezers to help apply them (works better than the applicator)
Comb
Jan Tana for touch ups
Sponge or puff
Extra latex gloves (everyone always needs them, so bring plenty)
Glaze
Suits
Shoes
Mirror (not every show will have mirrors, as I learned last time!)
Toothbrush and paste
Water
Straws
Safety pin
Small sewing kit
Bikini bite
Baby wipes
Flip flops
Cash
Jewelry
Business cards/competitor cards
Pen and paper
Bobby pins
NPC Card
Nail file
Press on french tips (in case of a broken nail)
Vaseline (for teeth)
Scissors
Feminine stuff (just in case)
Paper towels
Exercise band
Curling iron
Candy