In the UK, I've helped run some of the ninja bookshop crawls. There are usually guided routes that take you through independent bookshops - they are always interesting and great for discovering bookshops and the cities themselves.
Independent and second hand shops have really benefitted from these events and they usually offer discounts and gift bags for crawlers
Independent and second hand shops have really benefitted from these events and they usually offer discounts and gift bags for crawlers
https://www.ninjabookbox.com/london-bookshop-crawl