QUOTE(Fio Praeter Humanus @ Feb 26 2009, 04:39 PM)
You know it occurs to me you might try the old Sumerian spirit bowls, or demon bowls. They were literally bowls with beautiful paintings and within a downward spiral. The basic idea was the demon or evil spirit would become intrigued and follow the spiral and get lost and trapped down in the bowl. Once it was captured they would either bury it or smash it. The details are sketchy.
I know of such things,they are usually called Babylonian devil traps.But since there is no record of a complete method,I am not seriously considering their use.I might try a spiral leading inwards,it cant hurt to add that to the prepared vessel.And I dont think those bowls could capture anything more powerful than astral larvae,and various phantoms.