I've done that!
I've done some interesting things in my life. The first - I went on a school trip in St. Petersburg for 3 days. It's really interesting city. I could walk there for hours. Also I saw the white nights there.
The second thing that I've done was my victory in table tennis tournament. It was very hard to win this tournament, because there were a lot of hard-playing people. I have prepared for this competition for 2 months.
And the third - I've tried to play hockey. It's really hard sport. If you want to play hockey, you need a skates riding experience and strong legs, because the hockey suit is very heavy and large.
The most interesting thing I've done was the school trip. Because I've got a lot of information about history of St. Petersburg, visited museums and cathedrals.