Bev,
I actually have been trying to think of a way to make them. I took my son back to his summer intern job at college (3 hours away) and believe it or not my son and I batted ideas back and forth for at least an hour! He knew nothing about PR (he does now) but loves problem solving. I have a couple of ideas I plan on trying tomorrow. The problem with PR is it is difficult to "train" to do what you want. I have already had 2 failures.
I'll give it another try and let you know. Alice