Part #1
Get an assortment of candies and snacks. Have people randomly select one item then rank on a scale of 1 to 10 how much they like the item. average the number across everyone’s ranking.
Part #2
Give people an opportunity to trade with one another for 1 minute. Then allow everyone to rate how much they like their new item, and compare the change in level of satisfaction.
http://www.npr.org/blogs/money/2009/11/podcast_happy_efficent_holiday.html
How does this make you think of giving to charity? Would it be better to give someone something they actually need or what you think is best for them?