I have an Ericsson MC16 (rebadged HP 360LX) WinCE device from 1998. Was given it circa. 2003 when I was five/six. Despite abusing it for years, it still works today.
Are you still using it in 2020? If so, what have you found it to be useful for?
A couple years ago I got an HP 2133 netbook and although the chipsets have a habit of frying themselves every once in a while (forcing the purchase of new motherboards) the form factor is close enough that it can take over the functions than the old WinCE handhelds and Psions had.
I like the 'robustness' of a lot of tech product designs from the early 2000s and prior. Plastic parts in particular seem to have become rather thin in the years since.