Trace the letters of the alphabet with your toes.
Move your ankle only.

Raise heels of the floor as high as possible

Raise heels off the floor as high as possible.

Bend and straighten ankle through full range.
Repeat with opposite ankle.

With heel of foot in a fixed position, bunch towel up
by grabbing it and curling toes.

Attempt to balance on one leg with eyes open.
Progress to performing with eyes closed.

Position pillow between top of one foot and the bottom
of the other, then squeeze the pillow between your feet.

Position pillow between foot and wall, then using
ankle, press into pillow.