Discovery in the desert, Moab, Utah near Arches National Park:
While on the road, you can use a large Nalgene bottle (or other water bottle) as a stand-in for a foam roller to roll out your thighs and other muscles, a great plus if you, say, went for a hike while car camping and have sore muscles! For my petite frame, my size water bottle worked (see slightly awkward feature photo for this post). If you have larger thighs, try a longer water bottle. Gonna be thirsty anyway.
For a video demo: Kinetic Sports Rehab’s Youtube video on how to foam roll your quads, my local neighborhood therapist.
For other ideas on foam roller usage: Runner’s World Foam Roller How-to