When the Tidbyt, which its creators describe as a “personal pixel display,” arrived at my house, I liked it before I even knew what to do with it. With its walnut paneling and its ultra-pixelated display, it kind of looks like what would happen if you asked someone in 1956 to design an Echo Show for Amazon. It’s 8.2 inches long, 4.4 inches tall, and two inches deep, which is a little big to put on your bedside table but nestles nicely into a bookshelf or on a larger desk. It’s an…