If you have competitive youth, divide up teams or individuals to participate in Local Olympics. Let youth choose the sports, and have sponsors pay for the faux gold, silver and bronze medals (each medal would have a different value, say $100 for the gold, $75 for the silver, $50 for the bronze). Sponsors pay for their teams to compete, with proceeds going to your International mission project. Thus the team that collects the most money for the project wins the gold.