I haven't actually bought one yet,but I think I might. I curl my hair every night, and if it's raining my hair goes completely flat, so if I had a snood I could just pop it on and it would be cool but also cover my bad hair. I found a place where they sell some, here is the link: http://www.etsy.com/shop/ArtheliasAttic?ref=pr_faveshops she hand knits these out of rabbit hair or nice yarn. They come in a variety of styles and colors.
Just one other accessory which can really help you create a 1940s look while keeping your hair dry, or out of the way. I'll let you know if I get one!