Other uses for the potato besides caloric consumption (admittedly, not all inclusive):
-a crafty device for painting/designing
-a means of broken light bulb removal
-a rudimentary source of electrical power
-a facial (heh...heh...the word "facial" makes me chuckle EVERY time I hear it/see it typed. Yeah, I'm juvenile. So? Sue me).
...and on and on.
I'm sure there's also a plethora of perverse, other "non-nutritional acts" act's you could commit with one, but I cannot say I'm completely familiar with what that might be, but, hey, let your imagination run wild (bourbon...specifically "Makers Mark" helps, btw).
Alrighty, perhaps not the most informative post ever written, but, sometimes you get the strangest compulsion to share things. Mission accomplished.
Now, back to my Kentucky fire water...