Jam Jar light bulbs
Electrical light bulbs were a great innovation simply because they provide light on demand and are safer than candles, they don’t smoke and provide light that doesn’t flicker, this is why they were such an innovation in their time.
Simple homemade light bulbs are useful if you have a source of electrical power, and can be made using a glass bottle or jar ( if using a bottle with a neck then you don’t even need a lid just enough wax to plug the neck ) , some steel wool – or thin wire ,some thicker insulated wire , a match or two and some wax to seal the holes
If using a jar,
Open the jar, make 2 holes in the lid , strip about half an inch or 1 cm of insulation off, of the thicker insulated wire, on each end of each wire , thread 2 of the thicker insulated wires through the holes and seal around them with wax –
Take some of the steel wool or really thin wire and link the two thicker wires that will meet inside the jar, experiment with this a little as to the number of these and the thickness that works best with the voltage you are using, I find 4 of about 1 inch long threads of steel wool, works well at 12 volts, they last about 2 hours, then burn out … this is expected, they don’t really last long., also making them into a coil makes them provide more light.
For bottle based bulbs just use the wax as a plug for the bulb .
Once done light a match and throw it into the jar. And screw the lid with the wires gently, but quickly, back on, the match will burn up all the oxygen inside the bulb and allow this bulb to work,
You should have a working bulb now – turn it on and experiment …
They don’t last long and don’t provide that much light but can help in a pinch