Clean gat
Clean hopper (+Speed Feed, none of that garbage disposal nonsense
)
Fresh batteries in both, make sure they're in working order
Air system (+cover if required)
Tools/Allen keys for dissasembly and velocity adjustment
Any equipment spares you have available.
Complete Barrel kit
Barrel Cover
Squeegee/Fluffy
Goggles
Antifog
Microfibre cloth to clean your goggles (99p from tesco)
Paper towel to wipe your gear down when you get shot to sh1t
Spray bottle with water/splash of soap to clear barrel breaks
Pack
Pods
Paint
Jersey
Pants
Gloves
Beanie/hat/bandana
Elbow/Knee Pads
Slide shorts
Playing socks
Playing shoes
Change of clothes
Bin liner for dirty clothes
Sunscreen/Insect repellent/poncho/brolly depending on dodgy British weather
Food/Snacks
Water/Energy drinks
Money
Charged phone
Keys
PGI for long Journeys to the tournament and when you've got to wait forever for the next game.
iPod, similar pocket sized music player or maybe even an old school boom box if your totally agg, to play music and get you in the mood to shoot fools
Most importantly...bring your game
I think that's pretty much the extent of my checklist. + Anything else you can think of! Good luck tomorrow!