I've always wanted to make my own leg warmers - especially as I have two pairs of boots (one suede and one from knitted material) that sag down sadly around my ankles after a few minutes' wear. I knitted a pair of leg warmers last year, but used cheap leftover wool, so they looked ...well ... like cheap leftover legwarmers. Also, they didn't provide the required bulk for these particular pairs of boots. Earlier this year I spotted a picture on tumblr (I forget where) of an old man and woman in traditional clothing - they may have been Chinese or Russian - I honestly can't remember. And they wore these lovely thick fabric embroidered boots/socks. So that got me thinking to making legwarmers from fabric, and quilting them with a layer of batting.
I used the legs of an old pair of jeans - the section from knee to ankle- cut them open, narrowed them down, and attached buttons to fasten. Then I added batting and fabric for the inner lining and embroidered the top section (which peeks over the top of the boot).
They look pretty nice if you like a rough gypsy/peasant effect, but most importantly, they work!