Check out this wicked conceptual design for the Toe Mouse by Liu Yi.
I realize that it’s intended audience is those with upper limb disabilities. However, how awesome would it be for gaming to be able to keep both hands on the keyboard at all times? I imagine you’d have to practice quite a bit to have the same dexterity with your foot that you do with your hand. But, assuming you could, you’d pwn those n00bs.
