Since this original posting I actually started quilting a little. While my family members are more into art quilts, I like the personal touch, simple designs with meaningful fabrics. Anyway, I've been using some fabrics from
Spoonflower. They have some great trailer/camping fabrics such as
these.
Not the cheapest fabric, but if you buy a yard of something you like you can fill the quilt out with coordinating and less expensive fabrics.