For individual protection against damage in bags or on the go, custom book sleeves—often called "Book Besties"—are highly recommended by collectors on Etsy .
A Series Of Unfortunate Events 1-13 Lemony Snicket ... - eBay Lemony SnicketHD
: This book famously features a reversible dust jacket. The "proper" way to display it in-universe is inside-out, revealing a fake cover for a cheerful book titled The Pony Party by Loney M. Setnick, intended to hide the "dangerous" autobiography from enemies. For individual protection against damage in bags or