Those who reserve a copy at Gamestop will be able to claim the "life-size" statuette above, as well as a pack of eleven Mushroom Men trading cards (a twelfth comes with the game itself) featuring the title's diverse range of enemies. The "Jackalope" has ensured that we shall not sleep easily tonight.
It's probably worth mentioning that a further eleven cards will be offered to those who preorder Mushroom Men: Rise of the Fungi on the DS, as well as a superb Les Claypool/Mushroom Men poster. Red Fly's customized Mushroom Men VW Bus is not, alas, a preorder perk, but it is rad. Take a look.