No sew blankets for their cars. Remember that the police say to always have a blanket in the car? These are easy - go to your fabric store and ask them to cut 60" of two colors of fleece (this saves you the trouble of handling large pieces and fleece is almost always about 60" wide). Put one piece on top of the other. Cut into each side of the resulting layered square about every inch and about 5" in. Cut a 5" x 5' square off at each corner (otherwise the corners curve which is also ok...). Knot the top and bottom strips together twice and pull each one tight. You can make these in about an hour and they have a ton of uses especially with kids.