I am obsessed with boots. Lately, I have seen lots of pins on Pinterest that involved stylish bootsocks. You can either buy them handmade on Etsy or simply make them yourself from an old sweater, as shown in this awesome tutorial. I got lucky today and found a pair of knee high socks in the Euro section of a our local supermarket. I might go through hubbies old winter sweaters later though and see what I can find.
Here are some examples from Pinterst: