Heres how to make a compress without water or an expendive electrical device. This is simple and convenient. Take a sock and fill it with a cup of rice. (i used flax seeds). Heat it in the micowave for a couple mins and repeat ss necessary.
Follow this link. This is where i got the idea. This site has more tips.
I used this method to increase the healing and bring down the swelling and infection from lancing and a boil.