Considering the Raspberry Pi's a mini computer, it should come as no surprise one of the more common projects is a dashboard-style display. Over on GitHub, DIYer n0bel has a guide to turning the Pi into a smart clock.
The project here takes the Pi and an old monitor, mounts it to the wall, and displays a clock on it. Alongside the clock is the upcoming forecast, a satellite map, and some other general weather information. There's even a neat little ambilight effect going on behind the display to draw some more attention to it. You'll find the full guide to make it for yourself over on GitHub, including a guide for a desktop version if you don't want to take up a bunch of wall space.