As you know the most popular game this Xmas, is the Speak out Game from Youtube, or the Watch Ya' Mouth from Kickstarter.
The Speak out Game is going to release this October, but the Watch Ya' Mouth Already released its APP version,
The download link is here, WYMgame.com/app/
Or you can download from your appstore on the phone.
The purchase will provide retractors x 10 pcs in 3 different sizes upon your selection.