putt putt boat.
It was tempting to try and make it. The steamboat as a toy was available when I was a child, but not very easily. And despite searching high and low for it, I never managed to own one.
So I went through the site and figured most of the things required, bar one, were easily available. The one that was not available - glue gun - was also procured after some investigations and some asking around. So far so good. We spent a few weeks collecting the requirements one by one - soft drink cans, straws, epoxy, cardboard, tape and so on.
And then yesterday we embarked on this project. After a day of hard work, it worked beautifully. The joy of making things with ones own hands is amazing and the learning stays for a lifetime...
Thank you ScienceToyMaker