Summary

My wife told me it was a toy, so I made it practical, and if I programmed the Arduino Micro, it would be a USB keyboard.

The specifications of the built-in spring are as follows
https://www.monotaro.com/p/0730/2836/

The Arduino program can be found here.
https://gist.github.com/imaicom/10edc30c70e69ff082c746c7b2eacea7

Ultra Micro Switch Details:
Pitch: approx. 6.5mm
Size: approx. 12 x 6 x 6mm (0.47"0.23"0.23")