there are many of these. They are literally called "short stories" so if you search for books with a description like "A collection of short stories" you will find many examples in different genres.

It really depends what you are interested in or want to read. Most short story collections contain stories that are still longer than a couple of pages. You might want to try flash fiction. These are often very short stories and you can find them for free online: http://www.huffingtonpost.com/2014/06/13/flash-fiction_n_5481868.html Another suggestion would be a book that contains a lot of short snippets of information or facts. Something like one of the QI books: https://www.amazon.co.uk/QI-General-Ignorance-Noticeably-Stouter/dp/0571323901/ref=sr_1_1?ie=UTF8&qid=1506119527&sr=8-1&keywords=qi+book These are non-fiction but are books you can read in tiny chunks and are usually a lot of fun.