how soon do you need it? i am heading to Montana in 2 weeks, but will be taking my machine with me. thinking this over, i would have to make it with synthetic insulation and it would have to be sewn-through, but i could possibly do it. i'm just already busy getting ready for the trip and with other sewing, so i may not be able to do it immediately. we could probably work out a barter if you want.
i know i have the fabrics, and i have pillow-type fill... this is just such a cool, wonderful thing that i would love to help out.
edit: what the heck. i can sew you a cute little bag with a drawstring hood and a zipper (the velcro may be a bit much, given your desired scale). what color do you want? red, white, grey? if silnylon works for you, i could make it in yellow or brown as well. my email is tarbubble at yahoo.