Developing countries have a problem: roughly 20% of the world’s population lacks access to electricity, and kerosene lamps are both dangerous to the environment and hazardous to health.

GravityLight, whose motto is “Doing more with less,” has come up with a clever new way to bring light to poverty-stricken rural areas–without electricity. The lamp operates on gravity, by using the falling motion of a weight to one side to generate light. It began as a project on IndieGogo, and launched in 26 different countries. Now, after crowdfunding almost $400,000 (that’s 727% of its original goal funded), the company is releasing a redesign, which includes a sturdier, less breakable shell, a lighter weight, and a new pulley system.

Best of all, the lamp only costs $20, but will provide free lighting to families all over the world. This proves valuable in places that are generally without electricity, or “off the grid,” or too poor to pay for it. Not to mention that it conserves natural resources, which is always a plus.

What Sparks Our Fire: Creative design that helps move the world forward.