There are few things that I use everyday (and night), but have no idea how to make, more than lightbulbs. Luckily, Instructables member Mr. Fishers3 has put together a terrific homemade lightbulb tutorial to help us create and appreciate these everyday electrical wonders.
This lightbulb is made entirely out of simple, mostly household materials requiring very little in special equipment. The basic construction includes a glass jar filled with CO2 and a graphite filament(Pencil Lead). This makes it a carbon filament bulb analogous to those made by Edison before tungsten became the norm.