My right fore-arm has a really thin scar. It's hard to see unless the light is just right. On my left arm, by the elbow (not on but...around) is an asphalt-induced, waffle-looking scar. Funny enough, when I fell and got the scar, I was wearing my Monty Python, 'It's Only a Flesh Wound' T-shirt at the time. My arm was bloody and that bus driver gave me a funny look.
Other than that...I think that's all I have...my forehead may have a tiny, half-visible 'dent' but I think that cleared up in my teen years. I had a Squall-like forehead scar from the time I was about 1 or 2 but it's difficult to see at this point, more so than the arm ones.
Finally, I don't have any tattoos and my ears, while pierced once, have healed. The only other thing I've done to my body is filled it with caffeine, HFCS, sugar, etc.