Good deeds are often infectious and small acts can effect big social change. What existing campaigns, services, products have effected big change? How can these relate to increasing bone marrow donation?
Think about laughter or happiness having contagious qualities and subsequently affecting multiple people in a positive way.
What examples of ripple effects have you experienced or learned about? What makes an idea “sticky” or unforgettable? What starts a trend? These examples can be about anything (not just bone marrow donation) that we can use and learn from.