BobG's signature is:
So this gave me an idea. How high CAN you count on fingers and toes? Starting at 0 and covering every number, how many numbers can you represent distinctly and clearly? For example, on just your hands, with each finger/thumb either being up or down, you can count to 1023 in binary. But you have more than two distinct positions for your fingers. You have two easily bendable joints on each finger (knuckle and first joint), for example, and you might be able to make something out of fingers touching other fingers, or whatever. But I mean just the fingers and toes--like don't use wrist or limb positions to represent numbers.
(Hopefully this wasn't what BobG meant already with his signature)