Not quilting but I wanted a car seat for my dog. I don't like the ones they have online so I designed my own. Just needed my brother to cut it for me. To me it was simple. Make a box and put the foam in it I just wanted an angled piece to keep it level on the seat. He has now designed a frame made out of PVC pipe that is ajustable for different seats. ON paper!! I will probably never see it in actuality before my dog goes to the rainbow bridge.And why do I need it to fit different seats? No one else takes the dog in their car, I have no plans on ever buying another car etc. Gotta love them.