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
I have worked in transport for over 5 years in software and have read most of the technical books in the internal London Underground library. I generally have read >50 technical books a year.
In my blog I collect and distill what I have learnt. I write about transport, software development and things I feel others should know.