Forbidden Lego: Build the Models Your Parents Warned You Against!
So what makes these projects "forbidden"? There are certain rules that have to be followed in order for a LEGO model to be allowed to be marketed as a kit. Some of these rules would be:
Never launch a non-approved object into the air.
Never launch a non-approved object into the air with great force.
Never alter any LEGO part.
Never connect two moters to run together.
Never double the approved voltage.