Recycling
drumheads:
You can cut them up into strips for snare-wire straps, or damper ring for your snare
Sticks:
Wood Filler, Pet Bedding, Spill Absorbent, Composting Aid, or perhaps make a fire starter?
I know that it'll take a while to get a useful amount of saw dust from hitting the hi-hat, but if your bass-player is into Tony Levin, he might find use for the bottom half of old sticks to make a set of "funk-fingers".
Shells:
I know that some like to use old drums for wastebaskets and coffee-tables, but personally I'd rather restore an old drum to it's former glory or donate it to someone who can use it to play on.
Let me know if I'm missing something
Cymbals:
Can be used for home defense, just throw like acfrisbee. Or worn as a hat to protect yourself from the sun (can also be used for self defense or a shield.)
I know a guy who makes cool fridge-magnets out of discarded cymbals:
I have many broken sticks that i want to do something cool with. I thought about sticking them in the yard as like a tiny fence or something, but im actually not sure if sticks are chemically treated or something? (Our garden is pretty lively and i dont want to harm it)
I think it depends on the brand, I tested my VicFirth with a lighter, because i wanted to use them as kindling in the fireplace, and it didn't seam like there were any coating.