It's a useless box. There's not much to say about it because it literally serves no purpose. You won't gain anything from building it, but I recommend you do so anyway. Links to the free 3D printable STL files, Arduino code, and purchased hardware are provided below. Subscribe to my channel for more videos.

If you’re feeling generous, send me a tip via PayPal so I can buy my dog a wife: https://www.paypal.com/paypalme/pepper100

YouTube video with build instructions: https://youtu.be/YNLg8J1vwQ4

Tinkercad virtual Arduino Uno circuit and code: https://www.tinkercad.com/things/i8D66ZD5ia2

Arduino Uno (less expensive hardware clone): https://www.amazon.ca/gp/product/B01EWOE0UU/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

Screws for mounting the Arduino (#4 x 3/8-inch pan head square drive tapping screw): https://www.homedepot.ca/product/paulin--4-x-3-8-inch-pan-head-square-drive-tapping-screw-type-a-zinc-plated-26pcs/1000112877

Screws for the fixed lid (#4 x 1/2-inch flat head square drive wood screw): https://www.homedepot.ca/product/paulin--4-x-1-2-inch-flat-head-square-drive-wood-screws-zinc-plated-33pcs/1000111449

Screws for hinging lid (#4-22 x 1-in pan head square drive self-tapping metal screws): https://www.homedepot.ca/product/paulin--4-22-x-1-inch-steel-pan-head-square-drive-tapping-screw-type-a-zinc-plated-17-pcs-/1000114419

Magnets (6x3mm discs): https://www.amazon.ca/gp/product/B07WCN5FGD/ref=ppx_yo_dt_b_asin_title_o07_s00?ie=UTF8&psc=1

9V battery case: https://www.amazon.ca/gp/product/B07G583G88/ref=ppx_yo_dt_b_asin_title_o03_s01?ie=UTF8&psc=1

Toggle switch: https://www.amazon.ca/gp/product/B01BWL7Z44/ref=ppx_yo_dt_b_asin_title_o03_s01?ie=UTF8&psc=1

Servo motor (17g with metal gear): https://www.aliexpress.com/item/4001334251410.html?spm=a2g0o.order_list.0.0.21ef1802dTyz4A

Wire (20 AWG solid core wire): https://www.amazon.ca/gp/product/B08F724K7G/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1