I've made a tool for making "Which One Doesn't Belong?" pictures.
You can put text or pictures in each square, and change the colours of the  background and text. 
wodb-maker.glitch.me
#WODB 
My first tweet about this contained an example using pictures of humans. A couple of people rightly pointed out that that could lead to some unwanted reactions to the prompt, which I hadn't realised. I've deleted it, so here's another attempt
I've updated my #wodb maker to prompt for image descriptions, and to show you suggested alt text for the final image. 
Suggestions for a better format for the alt text are welcome! 
 
                
             
                
            