From Quirky to Genius: Discover Japan's Unique Inventions

11. A Waterproof Book Cover

What it is:enables reading in the bathtub Date of invention: 2014; average cost: $12.28* The You-Bumi The advertised uses of a waterproof book cover include the bathtub, swimming pool, and jacuzzi. It has an air-filled, waterproof plastic cover that fits over your book. The cover can float alongside you in the bath or pool. To turn the pages, your fingers can also fit into slots on the cover.

Waterproof Book Cover: @Twitter.com/BBuzzFeedDIY This book cover, which is available at Japan Trend Shop, Amazon (unless it's sold out), and other similar stores, can accommodate books up to a maximum size of 7.7 by 5.5 inches. Only one color is available for the cover: blue with white polka dots.