I commonly use my feet/toes for all sorts of things. I the words of one unfortunate victim:

"He tickled me.
He tickled me, and his hands are full.
He tickled me, and his hands are full, and he's STANDING UP!"

I use my toes so much, my wife claims I'm pedidextrous.

__________________
On the kinkometer, my kink measures as a sine wave.