First was getting disposable cameras. My dad was able to get a ton! These had paper covers, so I clipped those off and traced them onto brown paper bags. Then, I made little flags to remind guests to use flash and little felt bunting with jute to attach it to the camera. To personalize them a bit more, I used the design that we put on our invites, the program, and the napkins. I had it turned in to a stamp and just stamped the camera. I wish I had thought of doing this before I cut them out, because that would have made the process a bit easier.
If you decide to use the cameras with the sticky covers, there are a lot of templates on the web. Just remember that each camera is different and you may need to further customize the template. I preferred using the paper bag to paper because it shaped nicely to the disposable camera. I didn't have to work really hard to get the right folds this way.
The I Spy game was great because it had people of all ages at the wedding using the cameras, hunting for good shots, and talking with each other.
I believe people had fun with it, don't you?