For camping or an emergency "Johnny on the Spot" when ya just gotta go . use a plastic bucket and place a pool noodle on top for comfort. You could put a plastic bag in the bucket then at the pool noodle, easy clean up
Let's Go Camping with Kids!!! 40 Tips, Activities, Games and Recipes
Campfire Starters - stuff toilet paper rolls with dryer lint. You can even roll and wrap in newspaper. Toilet paper rolls and dryer lint are an inexpensive DIY project - in fact free and you are recycling!