Over the years I used various PCs, quite a number of storage devices and all kinds of mice and trackballs.
Sooner or later they all ended up as garbage. With one exception: my keyboard.
Yesterday I noticed that it is its 30th birthday. A Microsoft Natural Keyboard, manufactured 1994, "MICROSOFT® WINDOWS™ COMPATIBLE" and "MADE IN USA". Considering that it is in daily use for 30 years, that the key markings are still perfect and everything works as new I find this really remarkable. The original gray color has turned a bit yellowish, but that's all. USB wasn't available at that time, so I use it with a PS/2-> USB connector.
My hands are so used to it that I keep a spare model, just in case my precious keyboard breaks, but it doesn't
The spare is slightly older younger, now "Designed for Microsoft™ WIndows95" and "MADE IN MEXICO", but still not the successor "Elite" model. I'll probably never need it.