100 feet of cotton clothesline from the hardware store. I saw this craft long ago, but it looked challenging. Sewing it was much easier than I expected. I just used regular white thread. I'm quite happy with it, although I'm not sure how long it will stay clean and white toting toys around. You see the leather straps sitting here- I've punched holes in them to sew on, but I'm still waffling on which way. I'll snap another shot later- the basket is already in use, holding Legos. 

Idea:
http://onmyhonoriwilltry.blogspot.com/2012/01/cotton-clothesline-baskets.html