Hi Rick.
My PT gave me some stretchy long bands, which are nothing more than huge, flat plastic rubber bands, albeit with more give, that perform the same function. The PT also had me move my foot against the band being held from the opposite direction in order to work the range of motion on the ankle. Basically, you place the band around your foot from the side and have someone hold the ends of the band to provide the resistance.
Then you try to move your foot out and against the retraint. It's to be done in both directions.
My neuro also suggested ROM (range of motion) to give the joints lubricated. Rolling the ankle or simply having someone assist with passive ROM by holding the foot and moving it from side to side, pressing up on the sole, etc.