What is Stuff Your Kindle Day? The best way to fill your e-reader with free books.

Look Up Say More Versus Creator Hub Switch Off Mashable's Best: E-readers, robovacs, laptops, earbuds, smart home and more Trending Now Safety Net In My Bag VidCon with Mashable Back to School Furtastic All Series What is Stuff Your Kindle Day? The best way to fill your e-reader with free books. And you don't even need a Kindle to participate. Samantha Mangino, is an e-reader expert. She's tested all the Kindle and Kobo e-readers, diving into the buzziest models.