It's the great motivation for the kids to work for money. In order to learn few techniques on how to make money for kids you may want to read and apply some ideas to pull the kids into these lines.

One of the ways for kids to make money is to encourage them to help neighbors doing regular house keep work and getting paid through that. Like, for example, mowing the lawn for $25, etc.

There are kids making money online, some are doing even better than adults or professional online businesses. One kid make money only by doing affiliate marketing on his website.
 
If you want to explore more on the topic, please go to how to make money for kids.