This nonprofit states its design principles as
1) There is no design without (critical) action.
2) We design WITH, not FOR.
3) We document, share, and measure.
4) We start locally, and scale globally.
5) We design systems, not stuff.
A couple ideas they've implemented so far:
Project H designed a low-cost playground that can be used to teach math skills to elementary students. Playgrounds have been installed in North Carolina, Uganda, and the Dominican Republic. They are seeking ten more schools interested in implementing the project as I write this.
This is a Mexico City project focused on re-purposing old, unused furniture to make desks and tables for school classrooms. Parents and community members were involved in building the furniture. Always good when a community can take ownership of what's in its schools.
An example of socially conscious design: these are glasses whose prescription can be adjusted without an eyecare professional (who would be tough to come across in rural, impoverished areas)