A lot of the special tools listed grimoires are not really needed. But, the proper use of basic ritual magick principles are. Having the proper protective circle and knowing how to banish, are the tools needed the most.
I have translated many grimoires, including the Red and Black Dragon for the International Guild of Occult Sciences. I cannot believe that the expensive items listed in grimoires were available or could be purchased in ancient times.
Am interesting article on this subject can be found at the following link..