I had seen a Steve Spangler video a while ago of an experiment I wanted to try. I think it was this video...
Then I stumbled upon the experiment via Pinterest on an awesome blog called Ordinary Life Magic.
On Sunday after dinner we gave it a go. All you need to do are grab some tea bags and cut the top off, empty the tea, stand the empty bag on a plate, light it and watch to see convection currents at work. Just in case keep some water close by for safety.
It was so much fun!