We placed ten different flavors in each cup and wrote down the ten flavors. Each participant wrote down as many flavors as they could identify. The five with the most correct went on to the final round where they had a cup with 15 different flavors.
We bought our jelly beans off of amazon.com for $16 for fifty different flavors. Of course, the winner received jelly beans.
We did our best to keep them from working together by handing out a different assorment of flavors to each person who showed up with group of friends and we watched them as best as we could.
This activity doesn’t take much time, but a large number of teens chose to participate.