-If you wanted you could use an actual controller, but I couldn't bring myself to destroy one-
The controller is actually a Mint Container. I got it when I went on my family vacation and decided to pimp it up after I ate all the mints.
I made sure the container was cleaned out, the mints left a weird dust inside and the smell was pretty raunchy.
Mark the sides with a sharpie where you will drill the holes before you drill just to make sure the holes will be even.
After drilling, take the top of the container off and thread the necklace string through.
Put the lid back on and tie a jump ring to one end of the string and a lobster clasp or another type of clasp if you prefer to the other end of the string.
Enjoy showing off your old school style with pride.