I believe this is the best argumet for a guy to remember: His youth.
My favourite games to play with my friends were putting a coin inside a metal beer glass bottle tap and fold the edge of the tap to keep the coin fix inside it so the toy became more heavy and we used to hit the piece with the forefinger in order to reach the mark point as more close as possible.
Once I was 10 years old I used to construct aircrafts with my best friend. The most difficult piece to create was the wings, made by polysterene took from whasing machine paking. It was very exciting in particular when the plane could take off!!! Every second that it flyed was an our success.