This is such a good question. I wondered for a long time when it first became available and couldn't come up with any practical uses either. The main motivatio

This is such a good question. I wondered for a long time when it first became available and couldn't come up with any practical uses either. The main motivation for wanting one for me is likely connected to how my first experience into computers was on an Atari 400 home computer and the Pi 400 very much looks/feels like a retro homage to it and its kind. The best uses I could imagine would be as a lightweight terminal/client and/or as target spec hardware for making 8-bit like games in various programming languages/engines. Edit: I just came up with a new way to use it. I often wonder if/when I can use my phone as a computer with a real OS. Using a Pi 400 with a phone for a display could fit the bill, especially if you DIY the 400 with portable power. I don't think there's a phone that can be a display while providing power via USB-C (as some LCD monitors can do).