a two liter plastic bottle, bleach, water and some little effort can lightens your shack

I doubt if there are any one on this globe who 

never saw a 2liter plastic soft drink bottle. 

With a little imagination it could be 

created into a "light bulb" This is how it is done 

saving you money, and it is as safe as a 

house. The only draw back is it only operates 

in the sun, but the effect are enormous