I still use an N900, not as a phone, but as my "brain prosthesis" as a former coworker referred to it. I use it for all of my personal media that I prefer not to stick on my (work) iphone. My music and ebooks and podcasts and audiobooks. For this, it still works amazingly well. The FMTX still works as well, so I can still play audio in the car.

The original one I bought in 2010 stopped charging, so I am using it for parts. I found two of them on ebay in very good condition (one was only used as a digital picture frame), for under $100 US, so I bought both.

Here's to another 10-20 years with this amazing device!