Here is the Mason Lamp parts out and about.
This has been used for a couple of years now. You can make the tail more decorative and you can make the wick holder more decorative if you so desire. The wire here is Coat Hanger wire, though you could use Mechanics wire easy enough but use the stronger stuff.
Start with using the nail and wire, wrap the wire around the nail to form the wick holder. Now just create the base and the tail. Some do not make the tail but I also do not like to stick my fingers deep into the oil to pull it out to change the wick either.
This free-standing wick works great the only thing I might do is add in some marbles or stones so that there is less oil in the jar. You will know it is time to add in more oil as the lamp will not stay lit or the flame is very low on the wick. Each time you use the lamp, just trim off a bit of the wick so you have no charred ends, this is common to all lamps and enables the lamp to burn cleaner and brighter.
Variations on the theme include a floating wick holder.
seen in the following pic, is a floater I did with Bass Wood. It worked though it could use some improvements.
Hope this helps out folks!