The piano
I like to play the piano, everytime I see a piano I must sit down and play for a little while, either improvising, or playing a rock song. I was at a museum. An old piano was part of the exhibition. It had a sign “do not touch”. But being me, I just had to play it. Plus, I know I am great at it, so, people are going to enjoy, and no one is going to get mad.