Originally I had
Logitech Navigator Trio.
I bought it for $50.00 in mid-2004. It was very cheap.
But then I gave the webcam to my sister, and I decided to stop using the cordless mouse because it ate batteries like an SUV (I had to get new batteries once in 3 months for 5-hours-per-day usage).
So I bought a cheap generic mouse, and I am happy with it although it has a wide base.