Quantity   Component name
1 × 13" x 24" piece of smelly particle board it still smells after like three months
3 × cardboard walls stiff
1 × hot glue
2 × 3D printed flippers remixed slightly from https://hackaday.io/project/27816-diy-pinball-the-cheap-way
1 × PC power supply
1 × box of strawberry Fruit Roll-Ups fruity goodness for hacking strength; bendy cardboard for making springy, curved walls
2 × car door lock actuators like these https://www.amazon.com/Zone-Tech-4-Pack-Universal-Actuator/dp/B01IWMEBSO/
1 × vacuum solder sucker temporary plunger