How to build a circular LCD clock, step 1: buy a circular LCD that looks like a clock.
I'm not kidding, that's the extent of the build. They simply connect that display to a computer over HDMI. The only hacking here is browser-based JS for clock animations.
There's a Kickstarter project to make a round phone.[1] That had potential as a female fashion accessory. But the site hasn't updated since 2025.[2]
[1] https://www.kickstarter.com/projects/dtoor/the-cyrcle-phone-...
[2] https://www.cyrclephone.com