Just want to add that you can scan your photopass card at Test Track to have that ride photo added to the card. Last I knew, this was the only one you could do that with though...
Someone else mentioned "magic" pictures. I think there is a way to find typical photopass locations on their website and they have the different types of pictures that could be taken at each location. We did the big bunch of balloons in front of the castle. DH, DS and I all pretended to be being dragged off and away while holding the balloons. One of my favs.
You can hold Tink. You can fight Cap'n Hook. You can see Stitch coming out of the ground. Can't remember them all. But if you think about your pics a bit, you can have fun with them.
Also, the character meet n greet stations will often have a photopass photographer. And often the photographer will take candid shots of you while you are socializing with the characters. One of my fav sets is DS playing ape with King Louie in AK. I was so excited to see all the photos that the photographer took. And I got to just enjoy the whole thing and not try to document it all.