> That said, there are the Technics kits which have functional components that are largely useless outside of their intended configuration unless you have a mas

> That said, there are the Technics kits which have functional components that are largely useless outside of their intended configuration unless you have a massive amount of gears and spare pneumatic parts. This series of books is a good antidote: https://www.amazon.com/Klutz-Lego-Gadgets/dp/1338219634 https://www.amazon.com/Klutz-Lego-Gadgets/dp/1338219634