When I was in scouts we took the cups from those paper egg cartons and stuffed them full of dreyer lint or cotton balls. Then a coat of parrifin wax over it kept the lint dry. When you wanted a fire you broke the wax at the top and fluffed the lint up to catch sparks and the parifin and paper would follow suit and burn for a good little while to catch whatever wood you had. I dont know if its the best method but it worked pretty well for us.