But this DIY Tesla coil build might just manage to deliver on all three. Cheap? [Jay Bowles]’ Tesla coil is based on a handheld bug zapper that you can find for a couple of bucks, or borrow ...
If it were up to us, we would probably pick something that receives power wirelessly using a coil and requires a unique code. For their sake, we hope it’s not something that can be deactivated ...