If you've got little ones and you're into babywearing or baby fashion, chance are you've heard of "Babylegs." Assuming you haven't, I'll 'splain. Basically, they are baby leg-warmers (or arm-warmers) that you can throw in the diaper bag in case it gets colder later in the day while you're out and the baby's legs are getting too chilly. Or you can use them when baby starts to crawl so her little knees are protected from rug burns or hard wood floors. They are also popular with ECers (those Elimination Communication parents who infant potty train) since basically the kid has pants on that don't need to be pulled down to use the potty.
My first attempt was on a pair of Dr Seuss Christmas knee highs that a former roomate of mine gave me in college for Christmas. Totally random. I barely ever wore them, but they were there in the drawer so I figured that they could be sacrificed for my first attempt. They turned out pretty cool/crazy, and they were so easy to make that I bought 3 more pairs of knee highs the other day (for about $2.50/pr) and made some more. I think they look hilarious and plan on making some more when I find more socks that I like.