I want to add a bit more information about that great jelly roll bag:
It is designed by Ruth Jarman of www.ruthjarmantuition.co.uk and this is what she wrote on a comment about the bag:
For those who will not be able to ever do a workshop with me it is done using a stitch and flip method using a Walking Foot. If you want to be economical you can get 3 bags from a Jelly Roll, or just cut your own 2.5” strips 22” long (or more if you MUST have a wider bag/lap quilt). Add the strips one by one to the backing and wadding until required size is reached, finish by binding any raw edges and add buttons and buttonhole or use the press studs or if you must, Velcro tape! Use a wider fabric for the casings at the side to ensure the cord will pull up easily without leaving a huge hole that things can fall out of. The handles can be made from odd Jelly Roll fabrics padded with strips of cotton wadding sewn on approx. 7”- 8” from the outside and top edge or if you prefer use webbing on top of the handle to give it extra strength. Choose your favorite toggles to add to the ends of the cord and enjoy.