In 2012 I bought my first car. I've always wanted an older car so I could more easily tell how it works and the now 23-year old 1.3 litre engine in it has certainly helped with that. My dad clearly thought more tuition would be needed though and gave me this kit the following Christmas. Haynes "Build Your Own Internal Combusion Engine"!
It runs on batteries rather than petrol or vegetable oil but still shows how an engine works really well with light up spark plugs and timing which had to be set :) it wasn't too complicated (just the right level of difficulty to be challenging and fun) and it worked first time!