I tried a trackball for awhile. I forget what brand. Maybe logitech. had a red ball.
Didn't go faster. My thumb didn't like the rolling the abll around thing. Though it's pretty cool when you get fed up and spin the ball fast.
I use a microsoft intellimouse now. infra red. No need to clean the ball. Still has a cord. Cheaper than wireless and what's a mouse without a tail. Has extra buttoms on the side and a rolling wheel. The red light is cool. But makes me think I'm riding the brakes.
Uh, I have those lighted usb cords too. So when I turn off the lights it looks like it's christmass. Oh, the lighted ones were on sale and cheaper than regular ones, so no brainer there for me.
At my last place, I told the bosses that if they didn't buy adjustable keyboard trays, good chairs etc, they'll end up with a bunch of people on disability. A newbie actually joined the firm worked all of 2 months (received full benefits) and promptly went on disability. So nice adjustable keyboards from task2 and decent chairs but not leather for everyone.
Oh, 21" monitors too. So they did the right thing. But that was a while ago.