Packing Heat Book Tag

Tag originally created by JJ at ‪@JJtheBookwormBlacksmith‬ I was tagged by Mike at ‪@Bibliophile-Reads‬ 1. Which types of books do you pack? 2. Give examples 3. Should you leave space in your bag to bring back books bought on holiday? 4. What is your formula for working out how many books to bring? 5. Bonus Question: What book would you recommend to someone who can't travel - a book which would make them FEEL like they've gone on a holiday while reading it? 6. Tag others. EVERYONE!