I keep all my supplies in a large plastic box of paintballs... I just put all my stuff in a bag at the bottom and cover it up with a large plastic bag of paintballs. my "kit" has had:
-spare tinfoil for bowls (yes, I know it's no good for me)
-toothpicks (for poking holes, also used to hold tin foil in place for apple pipes)
-the ever-essential weed baggie
-lighter, usually those 99cent colored bic ones
-modified asthma inhaler used for a pipe
-pack of Camel Turkish Royals
-swisher sweet, strawberry
-old roaches I've been saving up
-plastic tube from a pen for apple pipes
-visine