Write 10 buck box on the container with a sharpie.
Take it with you next time you go.
Put coffee in the box
Walk in, hand the coffee to the pawn guy and say I need a refill.
If he don't shoot you he might go for it when he stops laughing.
Those little round sprinklers are perfect for roof cooling, both in Summer heat and during brush & tree fires. There's a guy peddling the rainbird srinklers for $200 a copy to fire departments in brush fire areas.