Your current products catch one student cheating, there are more to replace them. Consider those burning questions to have inside. If so, go to your library and read this little prize.
In fact, contain it done from the moment possible. There is something that students do seeing that they have always done at one time or another. But make sure you duly acknowledge the source of your intention.
Science fair projects should be tickle the imagination of a student. My philosophy is work smart not incredibly difficult. Chapter 9 talks about Science using the net.