Make travel coffee bags out of coffee filters and dental floss. Place a scoop of coffee grounds into a coffee filter and tie it up with dental floss. When you’re ready to brew, just make it like you would make tea in a teabag! Good for camping.
"Prolong the waterproof characteristics of your tent floor by making a simple, inexpensive groundsheet out of a common construction material called Tyvek." -Backpacker Magazine This might come in handy with the car camping tent :)