As I had feared would happen for a long time, my kick pedal (well actually my cousin's kick pedal) broke. So I made a new pedal out of 1/2" plywood.
First step was disassemble the broken unit, trace the foot part, and cut it out:
Then I drilled holes for the hinges (which were essentially the only deviation from the design of the original), holes for the orange piece, and a hole for the magnet. It was accurate enough to just eye-ball all the locations from various angles instead of measuring things. Which got me to this stage:
And the final assembled product (which works just as well as the original):