I have a couple that I think are steem exclusive content that could draw more in from the lets have fun crowds out there. First off there is @melinda010100 and her shadowphoto contest, and then there is @happyme and her little text based games. Two things I find fun on steem, one I enjoy seeing the results of and one I really enjoy playing in.
Just a couple things, I am not sure if the content can be considered exclusive, as I am sure there are other small text based games out there, (but the small format is very nice); and photo type contest, but the shadow contest is pretty exclusive to being about shadows. I don't get out in other social media much.