Plums, its the easiest thing you will ever do, believe me.
You need a bodger (quite expensive about £16) and then some hessian, some old clothes cut into little pieces, about 1 inch by 3 inches, and off you go. Just stick the bodger through the hessian, open the clasp, grip the material and pull it half way through and you have your first piece done.
My friend is making one too and she says her daughter does one end while she does the other. Your girls could get involved too.