The Foam Roll
Todd Dunivant of the LA Galaxy uses the foam roll to aide in recovery. The foam roll doesn't get enough credit for how much it can help soccer players who are tight after a strenuous practice or game.
Foam rollers help release tension and knots in muscles and help prevent injuries. It's like getting a massage. This is something you can do on your own everyday after training. You'll see results with consistent use - less muscle tightness and less injuries.
Just about every part of your body can get the foam roller treatment, from your calfs to the highs and hip area. Even just lying with your back over the roller will open up your chest area and help you breath better - it's sort of like doing a Yoga pose on the roller.
Most gyms will have a foam roller you can use or you can get them at any sports equipment store.
Hat tip to Ben Yauss, LA Galaxy Stength and Conditioning Coach, for the image.