I’ve been a Kensington trackball user for over twenty years. It’s easy on the hand, if I’m not moving the ball it just stays put, and it saves desktop real estate because it doesn’t move. I’ve tried dozens of other peripherals over the years and none of them made me as happy. The only drawback is that they stopped making them in all white, which looked great when the ball was swapped for a billiard ball.
If I did have to go back to a mouse it would be the Microsoft Intellimouse Explorer. Microsoft’s designers absolutely nailed that design, which is why it’s still selling after 18 years. Sometimes I miss the days of Windows 2000, an Intellimouse, and a Trinitron CRT running at 1600x1200. But I don’t miss the modems!
Attached is a proof of my first attempt at Cyrillic in five years. It’s just basic capitals so far. This is a monospaced font, so there’s some weird stuff going on. It’s designed for retina displays at text sizes, so some of the weird stuff in there (like M and N) makes sense in context.