Stanley 1.4L Thermos.
Built like a tank, holds heat as well today as the first time I used it years ago.
Also, the Herman Miller Aeron chair. Bought one used for $250 a few years ago and use it every day and there has been no wear. That said, replacement parts are very easy to find online if something ever breaks.
I've always said it like this:
"Socialism for the things we need. Capitalism for the things we want."