1. Warm Oil Massage
Massaging your feet is a simple and therapeutic way to restore warmth. It stimulates blood flow to your extremities. More on it – here.
Hydrotherapy is one of the simplest options that you can try at home to restore warmth to your feet. Read here to find out more.
3. Epsom Salt
Another simple way to make your feet warm is an Epsom salt soak. The heat of the warm water will have a warming effect, while the magnesium sulfate present in Epsom salt will provide magnesium to the body. More on it here.
Source: Warm Up to Ginger
Ginger promotes blood circulation and can help combat cold extremities. This article writes about that in more depth.