A simple target everyone can make is a 3"x5" index card. Take a magic marker and a straight edge and draw an X corner to corner. Then shoot for the center. That way no one needs a printer to make the target. Also distances have to be considered because some people do not have access to the longer distances. You could have a;

25 yard bench shoot
25 yard free standing shoot
50 yard bench shoot
50 yard free standing shoot
75 yard bench shoot
75 yard free standing shoot
etc...

Then you could break it down to scoped rifles and open sights. Whether you want to restrict and go peep sights, fiber optic, etc would be up to the group as a whole. Then you need to decide how many shots are you going to want put at each target.

Personally, I'd just as soon shoot and have fun without the need to better someone else, but then it could be a real eye opener.