I think it's going to be harder with Q going silent. There's a well established ecosystem already there of folks with a history of interpretation and followers, and I don't think you'll be able to get in there. And they've got good reason to go after a new people in that field.

Merch, though, should be easy enough. "Save the children", various stolen images of Trump with WWG1WGA, baby clothes with Q slogans, etc.