I certainly plan to have several available skulls of each aligned with several classifications of the dead carefully stored and warded. I don't want to be making roach hotels for the nastiest customers and there are plenty of such spirits in Okinawa. Many of the dead do not like westerners here and looking at what happened here...I can't blame them. There are also many malevolent spirits that trouble the Okinawan people as well. A good means of thwarting such is to force the spirits to have to move in other than straight lines - which they cannot do. Another is to place shishi dogs you were gifted - or made yourself on either side of your door. One with it's mouth closed keeps good spirits in, and One with mouth open scares evil spirits away.
As an ending note, more Sibyl prep rituals coming soon and more GV experiences. Finishing September with a flurry of rituals due to astrological timing - that devil is always in the details with much that I do these days. Observing the correct days and hours and phases of the moon has as I have begun more practical work, beyond the research phases proved highly effectual.There is definitely something to be said for it, and their are many voices and published books that say it better. The neo-pagan tendency (and yes that is too inclusive) to dismiss astrological significance to rituals, workings, and spellcraft is a tragedy bordering on crime. One has to be willing to be inconvenienced by such precise observances if one is to make much headway at all!