How about building a knife or rocker switch at the top that operates like a
see-saw, and drop two ropes to the ground from it. Pulling on one rope
closes the switch and connects your hat. Pulling the other opens the switch.
Real simple, but it requires getting out there physically to do it. The
switch could be a simple lever bar that touches a contact when it is rocked
to one side.
Just a plain mechanical solution. Experiment, make it work, and have a
little fun along the way.
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