Print finished signal

This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/l8MJqQLxOWv

The thing is a deck that has a 9V battery holder, a hole for a small toggle switch, space for a buzzer, and a lever microswitch, all wired in series. The idea is to sound the buzzer when the toggle switch is on and the microswitch feels the Y axis carriage return to its parked, left side position. Mine rides on an Original Prusa printer, but it may be adaptable to others, or the concept stolen easily. It was a simple project in Tinkercad.

Currently, mine is fastened to the z axis carriage with Velcro, and I am not confident this is the best approach.