A Bankers Box
I have moved four times during the last 10 years.
The fourth time being just earlier this month (February, 2015).
I noticed during the moving that I still have all 5 bankers boxes I bought in the early 1980s when I was in University.
(These bankers boxes came in a pack of fives.)
Discounting the usual wear and tear, they are all in good working conditions.
In this day and age when many things are make as disposable, I appreciate the quality with which these bankers boxes are made.
At the going rate they may well last to my last move, whenever that might be. : - )