The original question was more to draw attention to the idea of how JWs would react if they suddenly saw their symbol incorporated in something that they see as symbolically evil. And the vision of the JW.org symbol incorporated into a Christmas wreath caused me more amusement than it probably would most here.
But, as is my wont*, I found out that the WT has actually been a bit sensitive about such things in the past, and there is a legal precedent. Apparently a Christmas album was released and it contained a song from the WT songbook that basically sounded kind of Christmassy. Well, WT Legal did their nut** and, of course, as is their wont, sued.
https://www.jehovahs-witness.com/topic/5693298898370560/suing-music-industry
Back to the title, it's not just Christmas wreaths. The WT symbol on a large inflatable Santa would probably be funnier. Or spelled out in Rattigan's worldly Christmas lights:
https://www.jehovahs-witness.com/topic/5107191200088064/ive-done-christmas-lights-outside
* Stoopid autocorrect. I had to fight it to get the totally correct English word "wont" on the page. 🙄
** Meaning they got very angry in an older way of speaking.