Ankle rotation: strengthens ankles
Sit down on a chair and lift one of your legs off the ground. Begin rotating that foot clockwise and do that about 10 times. Then switch to counter-clockwise and go around 10 times.
Resistance band pulls: strengthens calf muscles
Secure a resistance band around something firm—your couch or TV stand perhaps. Then slide one of your legs under the other, keeping your knee slightly bent. Slip the foot on top into the resistance band and slowly pull the band towards you with that foot. Repeat 10-20 times on each leg. (This one sounds a bit complicated, but feels so good on your feet and calves!)
Ball steps: strengthens the balls of your feet
Grab a tennis or softball and place it under your foot (tip: sitting down might make this easier). Push your foot down on the ball and place all your weight on it. Move your foot around for a semi self-massage.
