Turbo fast Music Box
If you get sleepy when you hear a music box i can agree. But if you spice it upp with a DIY hack you will learn in this video how to make it go faster with a drill.
Price: 2 USD*
Does it work: -
Link: https://goo.gl/Rk9YdC
Music by Joakim Karud, / joakimkarud
Song: Hate it Or Love it
*price may vary
(i am not trying to sell, i just want to show cool gadgets and where to buy them)