Dear Tinkerers,

I could pop a plastic pod in a coffee machine and hit a button. But it’s a lot more fun to grind and brew my own cup of coffee.

You could go to the dollar store and buy a cheap, plastic balloon car, which would probably break after two runs and end up at the bottom of your toy box. But wouldn’t be a lot more fun to make your own?

Today we’ll focus on making and improving and refining balloon cars. They might work or they might not, but we’re going to learn a lot more than we would by just opening a package.

Sincerely,

Mr. Heimbuck