I'm filing this post in the category of "I meant to post this earlier, but I just found this picture on my phone."
A while back, Hallmark used one of my greeting card characters as a mini sign to showcase some new Shoebox cards. My "Your Ass Is Old" donkey was on display for at least a couple of months, which made me quite happy. You can see the actual donkey card in the lower left corner, and another one of my cards ("Bear Lawyer") in the lower right corner.
I wish I could say that I created those Maxine cards on the top row ... because then I'd be rich.