“What are you reading?” It’s a simple and intimate question @subwaybookreview asks commuters all over the world. While explaining a book should be a rather straightforward task, the responses are often as revealing of the person as they are the work in question, making for great reads in their own right.

We don’t normally go in for augmented reality apps—the helpful functionality of Ikea’s aside—but Dumb Fun, designer Tim Moore’s collage-inspired iteration, found its way straight to our aesthete’s heart. While we’re not entirely sure what we’re supposed to be doing with it (yet!), looking at the world through Dumb Fun’s floral-filled lens just makes us happy. Plus, you can’t argue with a name like that.

By his own account, Martin Frost “paints pictures that people can’t see.” A fore-edge painter, Frost constructs hidden worlds between the pages of books, revealed only to those who know where and how to look for them. The idea that such beautiful images could lay unknown to or undiscovered by a masterpiece’s owner is at once heartbreaking and delightful.