Groove Stick

1980s 

If you've ever had the problem of playing the hi-hat cymbal too slow, Groove Sticks could be for you. With this double-tipped drumstick, you could play the hi-hat twice as fast by hitting it both on the down and upstroke. The problem was that you couldn't play anything else, namely a drum, with the Groove Stick. Musicians never did find them groovy.