This resource pack converts the new 1.20 Chiseled Bookshelves into usable whiteboards! Books have turned into markers, which you can use to mark up your board to your heart's content! Right click with a marker to draw, and to erase, just right click with anything that isn't a marker! (Items have been renamed, so you must search "Whiteboard" or "Marker" to find them in the creative inventory. Otherwise, '/give @s chiseled_bookshelf' and '/give @s book' are how you obtain them through commands.)