[getforfree]

You can buy some thick plastic kinda like ones that walmart has in rolls in the sewing dept. Than make bag out of it. You can "sew" it by folding it and placing in between 2 pieces of wood with about 1/3 inch of plastic sticking out and use candle fire to glue it together. That way you can make a bag of any size. Don't know how much the plastic will cost per yard, they have different kinds.