PCB design used the kimotor (https://github.com/cooked/kimotor) KiCad plugin to make quick work of coil layout to fit in the card outline.  Going cheap with 2 layer board.  The rest is just rectifier and LEDs.  Made another board iteration with a reed switch footprints to maybe switch the LEDs on and off with the magnets...

Boards ordered and will hopefully arrive with a few days before contest entry deadline