Tobin's Spirit Guide, a nod to the Ghostbuster's guide-book of the same name, is a reference book used by the Scoobies in numerous epides of the show. notable appearances are in Revelations, where Giles finds an piece on The Glove of Myhnegon, and Fear Itself, wherein the book and a few drops of Oz's blood conjure up the demon Gachnar.
The prop is actually a cover created by the Art Department, wrapped around the ubiquitous Picture Museum of Sorcery book, which appears multiple times in the show in its usual red and black binding.
For my replica I recreated the Tobin's cover and attached it to my second copy of Picture Museum. I recreated the Glove of Myhnegon and Gachnar pages and rplaced the original pages with them in my copy.
