Summary: Pretty much everything.
So if you plan on being allowed into the Mad Decent Block party today (August 9th) you should probably read the list of items below that you aren't allowed to have.
No Masks
No Illegal Substances
No Drugs or Drug Paraphernalia
No Pets
No Massagers
No Laser Pointers
No LED Globes or LED Microlights used for Light shows
No Pacifiers
No Eyedrops
No Glass, Cans, Cups or Coolers
No markers, pens or spray paint
No large chains or spiked jewelry
No Stickers or Fliers
No Balloons, Balls, Inflatable Balls or Frisbees.
No tents, large umbrellas, beach chairs, or blankets.
No large purses or bags (Anything over 10″x10″)
No stuffed animals or dolls (including plush backpacks).
No Kandi Bracelets or Kandi Necklaces.
No candy including gum, lolly pops, sucking candy
No food or beverage of any kind.
No open packs of cigaraetters
No unsealed tampons… in case you felt like taking used tampons with you. or something.
No lawn chairs of any type
No weapons (including pocket knives, pepper spray, swords, guns)
No fireworks
No professional recording equipment
No Video Cameras or GoPros
No Toy weapons
Open containers of sun screen
Things you can bring:
Small Bags (the size of fanny packs and small clear bags), which they will most likely search
EMPTY Plastic Water Bottles up to 20 oz
Empty Camel Backs
Small Personal Cameras
Lighters
Cell Phones
Earplugs
Sealed chapstick and lipgloss
Sunglasses
Hats
Factory sealed sunscreen