Before you begin, read this:
Pony beads
Letter beads
Stretchy string, AKA elastic cord
PAM8403 and/or PAM8610 amplifier board (can be purchased online)
Take your string and measure at least 12" (approximately 30cm), then cut.
Find the top left hole labeled "-" and put the string through. Grab the letter beads and spell "Pam" then string them on. Then find the top right hole labeled "-" and string it through again. For the 8610 board, do the same but with the top left/right mounting holes.
Add 27 beads and tie off.