In 2008 I decided to build a jet engine, thinking that the skills acquired would help me develop a sub-orbital rocket launcher I had in mind while still being realistic. The task turned out to be an order of magnitude harder than I anticipated but it taught me the ABC of Engineering. After completing and testing the engine it was mounted on a mountainbike and driven around my town.
Space Launch
I've paired up with Australian marketing genius Steve Sammartino to launch a payload into outer space for under $1000. We paid tribute to the Space Shuttle by proving that this machine can still fly, albeit in toy form.
Legocar
The #SuperAwesomeMicroProject aka lego car is a fullsize car built out of lego with a lego engine that works on air and drives people around at speed. 40 people from around the world crowdfunding a kid in Romania via Twitter to build an eco-friendly car out of toy pieces.