I like toe toppers - a kind of half sock - which are perfect for those times I don't want to wear full socks. They're really great for just lounging around the house and keeping your toes warm, or for wearing with mules or clogs to keep your feet from slipping around.
Most are just half socks, but I found some that have a strap that will keep them on your feet, and some with gripper pads, too. Sorry, I couldn't find a pic of those with the strap, as I like those much better than the strapless kind.
Toe Toppers
http://www.become.com/shop?refdisa=y...oe+toppers&qet