https://www.cnet.com/news/amazon-breaks-holiday-sales-record-again-in-2018/

Amazon also cites the Fire TV Stick 4K streaming devices and the Amazon Echo speaker as the top gadgets from the devices category overall, and a record buying season for Amazon Kids' Editions of the Echo Dot and Kindle Fire tablet, which include usage timers and other parent-set restrictions.

Among other statistics, Amazon says Alexa set more than 100 millions timers and that users asked Alexa for three times as many recipes as they did during the holiday season in 2017. Mariah Carey's 'All I want for Christmas is You," remained the most played holiday song via Alexa for the third year in a row.