I came across a great book of extremely short tales called BAM! 172 Hellaciously Quick Stories. Written by Luc Reid, a Writers of the Future winner, the collection is loaded with amazing examples of speculative fiction -- magic, adventure, horror, fantasy, humor, drama, all very imaginative and thought-provoking.
If you liked my previous recommendation of short-short-story anthologies, you will definitely enjoy this compilation of even briefer yarns. Some are like fragments of grander science fiction epics, others are twee renditions of interesting ideas, all stemming from an incredibly creative mind. Each nugget is a satisfying story in its own right that takes only a few minutes to read. Even if you only have limited time, you will find yourself trying to cram as many of these gems as possible into your precious daily agenda.
For those writers out there trying to write the next great American novel, this book might inspire you to also try your hand at the short fiction artform (in this case, short-short-short fiction). You will be amazed at how many great characters and ideas can be packed in a brevity of carefully selected words presented in clear, concise, yet powerful fashion.