Spend the meeting with your Guides-Rangers making firestarters and testing them out! Have fun making them, then burn, baby burn! Afterwards, discuss the pros and cons of each. I’ve made a little rating system you can use to evaluate them!
Check out several different DIY Firestarters here: 17 Homemade Fire Starters To Keep You Toasty
Don’t forget to check out this tutorial by one of my Pathfinders and her Guide Sister: Homemade Firestarters