What activities can you suggest for community development?

Anything which fosters bonds based on similarities rather than highlights differences based on class, wealth, ethnic or religious factors. Games (or sports) are usually a good leveller. It doesn't matter how much money you've got, where you come from, and what you believe as long as much as whether you can kick / return / bounce / strike / throw or return a ball. And even that isn't important if the purpose is for fun and community.