When my feet are dog tired, I like to give them a Rubz down. This little ball, just under two inches in diameter, gives the perfect foot massage.
While standing, place your foot on the ball and roll; the 172 "stimulating fingers" work the soles of your feet. If you want more pressure, you simply put more of your body weight onto the ball. My feet crave a little rub after a long hike or run. Giving your feet a little love can help prevent plantar fasciitis, an overuse foot injury that can sideline runners. The massage brings blood to the stiff fascia, making it more pliable and responsive to preventative stretching. You can pick up a Rubz at REI for $5. A cheap and easy foot rub, however, is truly priceless.