Kids love money and they love helping the poor. Here's a great way to get them to create for the greater good.
Kids love money. They don't know its' power, the same way little girls don't understand the power of make-up and high heels but they like it.
The second thing is that kids, unlike adults, are easily moved by the troubles of others and instinctively want to reach out. A great idea would be to hold a fundraiser where all the money comes in from what the kids sell.
The recipients of the funding can be organisations that deal with children. This way, there's a direct connect. The funding should ideally be for something substantial like a school, a well, a farm animal, medicines, water pumps etc. This way, those who raised the funds can see where it goes.