What kind things are needed to make it? What technical equipment would i need to make it possible?
motor(s), battery, wires, gears, saw(s) (for cutting it to shape), a soldering tool or some form of conecter for the wires, button(s), and some form of circuitry (for the timings).
A Welding Tool and Sander or Sand Paper are Optional
And if you want the music you would need even more circuitry and a speaker.
small servo motor
crucible? for making the metal shell
make a mold with plaster of Paris (or whatever that will allow you to pour hot metal into a custom built crucible
you can lathe out a chunk of metal (i would imagine brass would be really easy and accessible)
for ideas, i would look into music boxes