I do a lot of my projects with fingering yarn and I always have a little yarn left over. These are done using #2 needles and are simply knit in stockinette with a rib cuff. The yarn is thin enough to fit in a shoe or boot without being too tight for comfort.
I have a gram scale so I weigh the yarn and try not to use more than half of it. That way I can make 2 socks exactly alike. Here in N.E. they are the perfect thing to wear over your tights to keep you warm. If you dare venture outside.............................said the hobbit