A few months ago I saw an initiative that takes place for quite a few years ago in France: The pièces Jaunes.
Basically, the idea is that children around the country will build a small box with a nice design, and will put inside coins that we do not usually use: 1, 2, 5 or 10 cents.
Once the box is full, they take the box to the post office and send it to the organization in charge of this initiative with the objective of raise money for Children’s hospitals.
Beyond the criticisms for and against the people who organized this initiative (the wife of the ex president Jacques Chirac), I think we could start a similar initiative to raise money that goes to promote more OLPC projects, we can buy more Xo’s, we can buy robots, and other creative educational resources.