I just made a "car quilt" for my daughter. She is taking an outdoor "Baby bootcamp" exercise program where you take your baby with you. She wanted a quilt (with a baseball theme) that she could just toss on the ground and put my grandson Noah on while she was exercising. I made a twisted quilt with baseball fabrics on top, used a double layer of cotton batting and a dark blue cotton fabric on the bottom. She said it's small enough that she can grab it out of the car, and use at a moment's notice and then toss it into the washing machine when it's dirty. It's also thick enough to absorb the dew when the baby is sitting on it.