How do you build a simple roller coaster?
Height is determined by city building codes. Anything lower than the speed bump. Lowering rarely improves handling. Because people think it's cool. I do not. It changes the cars characteristic's, usually for the worse.
While I have not heard of electric blankets being harmful, except for the inherent shock or fire hazard, there have been concerns about high voltage transmission wires having an effect on people with its electromagnetism. The heater wires in the blanket operate at much lesser voltage that the high tension lines, but, they are so much closer. Something to consider..
Anonymous phone call to the cops about their drugs would work.
