Mini da Vinci Machines
Before he was “da man”, Leonardo da Vinci was just another screwball messing around with things that everyone else laughed at. Later on, some of those silly ideas matured into aircraft drawings that happened to be centuries ahead of their time. To this day they stand as a testament to the power of letting your imagination run off and do its own thing. You probably wouldn’t want to be a test pilot for any of these, but they are an invaluable learning and creativity tool.