take a piece of fabric cut to 12.5" x 8". turn right sides together and sew along one short side and down the long side. turn right side out. fill with dry long grain rice. i used a tall glass to put the fabric tube in and use a small measuring cup to fill it. leave about 2-3 inches from the top. fold in open end and sew with 2 straight stitches. now pull sock over the rice pad and use or give as a gift.
idea: make some with gender neutral socks/fabric and give as a his and hers pads.
to heat: 2 minutes in the microwave will make it nice 