100 Answering Machine Messages to Bamboozle Characters is now available to buy on DriveThruRPG and 100 Books to Find on a Ravenloft Bookshelf and 100 Books to Find on a Ravenloft Bookshelf (Fantasy Grounds) are now available to buy on DMs Guild.
In a modern setting, characters may hear answering machine messages, whether stored on voicemail or an old fashioned recorder. 100 Answering Machine Messages has 100 messages for them to hear. These messages are irrelevant unless a GM decides otherwise and could be a source of distraction or adventure hooks.
Not every book is important or valuable and 100 Books to Find on a Ravenloft Bookshelf has 100 books for fleshing out a Ravenloft bookshelf with inconsequential works. Whether or not a specific book has value or importance is up to the DM. The supplement is also available as a module for Fantasy Grounds.