A few years ago, I came up with a way to create your own double layer socks. You just put one sock on and then don another on top of it. You can customize the properties of your own double layer sock by changing up the types of socks you use for your inner and outer layer. One of my favorite combinations is to put a good wicking SockGuy style sock underneath a padded Thorlo style sock.
Try this out and let me know what you think.