When Amazon introduced their new Alexa devices just a few months back, they announced their Echo Buttons which were due to launch shortly. Today, the company started offering pre-orders for $20 which includes a pack of two buttons.
Units aren't expected to ship until December 19th, but getting in this early means that you should have the buttons arrive in time for Christmas. These buttons run off AAA batteries (included) and can be used to play games like Beat the Intro (music guessing) or Fourth Down Trivia (sports trivia).
Support is included for all existing Echo devices to date. Once they reach the market, you can expect developers to find new games or ways to utilize the buttons in fun and unique ways.