One such project is "The Dwale of Avagddu", a well-crafted tome created by occultist and Lovecraft geek Ian Corrigan. He was kind enough to send over some photographs of his work and provide a little bit of background.
"This book was made based on the inspiration of the old Propping Up the Mythos site, and is several years old now. It's played in a couple of LARPs, but mainly just graces my Lovecraft shelf at home."
"The Dwale of Avagddu is an obscure tome that seems to combine British mythic lore with some much more unusual symbols and ideas. It opens with an otherwise unknown prequel to the famous tale of Ceridwen and Avagddu, but then proceeds to describe the strange beliefs and work of a cult of sorcerers who worship Those Beneath the Mound."
You can see more of Mr. Corrigan's Lovecraftian reviews and ephemera along with various Pagan stuff at his blog "Into the Mound".