A crushing device (100) includes a base (101). A first sidewall (103) and a second sidewall (104) extend distally from the base. A crushing assembly (102) is coupled between the first sidewall and the second sidewall. The crushing assembly can include a first crushing plate (601) pivotally coupled about a first pivot (406) defining a first axis (111) and a second crushing plate (602) pivotally coupled about a second pivot (507) defining a second axis (112). A lever (110) is coupled to the first crushing plate, and is selectively movable between a first position (600) and a second position (700) to rotate the first crushing plate in a first radial direction (703). A cog insert (604), coupled between the first crushing plate and the second crushing plate, causes the second crushing plate to rotate in a second radial direction (704), opposite the first radial direction.