We've discussed before how difficult it is to craft a prop tome. Actually binding the book isn't that difficult, but getting to that point requires collecting a huge amount of material to fill the pages. That's why I was so happy to get an email from Nick Storm pointing me toward Clint Warlick's collection of summoning circles. They're a great resource for anyone crafting eldritch scrolls or tomes. Because of the clean presentation they can be used as-is as book plates or processed with some erosion filters for a more rustic appearance.