See the "Q" coffee mug in Chain Of Command on National Geographic S01-E01.
https://youtu.be/YClGb8fy15U
On January 13, Q posts “Do you TRUST the Chain Of Command?” On January 15, the U.S Dept. of Defense tweeted out the airing of “Chain of Command” by National Geographic. During the show, there was a shot of cup displaying the letter Q.
Watch the full episode: https://youtu.be/vhFmiurZ5XY