Any implement you want... and THEN some. Like Font said, get some arco notation for cymbals, or yarn/rubber/plastic mallets, Dreadlocks, drumsticks of all shapes and sizes.

Hell, with the new water rule being passed, create a rig that runs percussive water over different cymbals.

Oh damn, that's so awesome. That's opens up so many possibilities for different sounds.

Don't let Hopkins see that either.