Using renewable energy is the best way to save your money pocket like this world first solar light bulb from Nokero. This bulb is specially designed for mobility purpose like camping or travel to a place without electricity because it is solar powered. This Nokero N100 Light Bulb uses five high performance LEDs that can stand up to 4 hours using the nickel metal hydride battery that long lasting for two years before replace with the new ones.

This bulb is available at Nokero online shop for starting price around $6 if you buy in bulks or $15 per piece.

[Via Nokero]