For my type we have used: two pieces of wood, two magnetic pickups for guitar, two steel plates (one folded), one input jack (1/4 inch), 14 screws & nuts and one long steel stick cutted on 12 pieces.
It took 4 hours to make it, screwdriver, a saw for wood and for steel, soldering gun and some wire.
It was fun.
Playing sticks can be tuned to desired tone by adjusting length. They are also changeable – we can use flatten sticks.
Here are some sound samples: