Great site you have here! I use sawdust and paraffin wax. Cover a cookie sheet with sawdust and pour melted wax into the pan thoroughly coating the sawdust. Cool in the fridge and then cut into 1 or 2 inch squares. S-Fold a dozen squares (keeps them from sticking together) using aluminum foil or Saran wrap and put in your kit. They burn long and hot and will easily ignite larger tinder.