My spell jars are very special to me as they incorporate not only elementally balanced herbs and crystals, but also each spell jar holds powerful magick in an ancient Sigil that has been reclaimed for each intention. Sigils are drawn on mini scrolls, sealed and placed into the jar.
Kept on an alter or private space these spell jars can increase the frequency and energy of the magickal intention you practice by 100 fold.
 
As always, use of any magick requires responsibility in practicing it properly adhering to the laws set forth by the universe, that whatever you cast out will come back to you.