You Can Turn Soft Drink Bottles Into Handy Solar Lamps
Intéressant cette idée d'utiliser l'eau et le solaire.

The design was inspired by the Moser bottle, which is a water-filled bottle used to diffuse sunlight into a room during the day. Instead of sunlight, however, this design uses an LED to provide the light, for decorating a garden or for use when out camping or traveling.
via Hackaday : lire l’article source