Ah, I remembered a few more now...
When I was about six, or maybe seven, it was winter, and I decided to 'tube' down a big hill at the nearby park. Instead of an actual snowtube, we had these shallow bowl-shaped discs big enough for one person to sit in. I jumped in it, and I noticed I was heading to where the older kids were snowboarding. I went over a small bump easily enough, but then I hit a bigger one, and I literally went flying off my disc, through the air, and landed on my face. Luckily the snow was thick. When I got up, I noticed there was a little red trail from where I landed to where I was now. It turned out I lost a tooth, but the 'tooth fairy' still gave me the money, despite the lack of the tooth.
When I was ten, and once again, it was winter, I was out at recess, and I was playing football with some kid. Since it was freaking COLD, the football was COLDer, and when I went to catch it, instead of catching it, it slammed into the tip of my finger and I was on the ground. It felt like my hand was frozen, but I put it in my glove, which was thankfully cold enough to dull the pain, and I headed inside. Of course, the school nurse/ principal's assistant/ detention manager/ satan said that it was perfectly fine and I didn't need to do anything about it. The next day I went to the hospital, and I had a hairline fracture on my left middle finger. Hey, at least I could flip people off for 2-3 weeks. : D