The Glow Brick, designed by Sam and Jude of Suck UK, is a cute little cordless nightlight made from a phosphorescent lightbulb (yes, a REAL lightbulb) embedded in a block of acrylic. It requires no electricity and can glow for up to three hours, “powered” only by light it soaks up from the sun or other artificial light sources, making it as energy-efficient and eco-friendly as it is clever.

Glowing with the aid of phosporescence (like the glow-in-the-dark stars on your childhood bedroom ceiling), the Glow Brick employs an often-overlooked material for efficient energy generation. Phosphorescence is an extremely promising source of energy-efficient light, and we’re not sure why more lighting designers aren’t experimenting with the environmental applications of phosphorescent materials.

The Mathmos Aduki Ni is a compact, portable, fully rechargable colour changing light.

When turned on this chrome bean comes alive, illuminating the metallic surface and gently morphing through a spectrum of colours.

The Aduki Ni has a built in rechargable battery and lasts about 6 hours without a lead. It is splash proof and can be used indoors or outdoors. It also comes with a cord allowing you to hang Aduki Ni anywhere in the house or garden.

You can set the Aduki Ni to change colours automatically or pause it on your favourite colour.

Mini Fiber Blue lamp. When I was young and saw these in the record store and Spencer's Gifts, I fell in love with their weird tackiness. The originals were about $100... and now progres has shrunk the size and the price. A mere $5.95 will get you this 10" marvel of science.