I love this idea:

‘Plumen’ light bulbs, by Hulger the first ever designer low-energy light bulbs to hit the market (first in the UK, soon in the US)! Their idea was to “create bulbs that people will buy through genuine desire rather than mere obligation,” and I for one, am glad they did! It’s crazy to think that something as established as a light bulb still has a multitude of possibilities for the future.