Here is an EMS device made to treat your feet and legs. The SixPad Foot Fit Plus Trainer has 2 modes and can connect to your smartphone to visualize how your muscles are being worked. Simply strap the thigh pads on, put your feet on the platform, and choose the mode that works for you.
This foot trainer uses vibration to get rid of fatigue in your feet, calves, an thighs. The bad news? Something like this doesn’t come cheap.