I have a 4th Gen iPod that lives only in my car’s glove compartment. Like a garden gnome.
See, my car (2007) does not have a USB jack in the stereo, and the stereo itself is very non-standard (i.e., replacing it with a third-party model is not an option. It has a hardwired old-style iPod connector that feeds into the glove compartment; I think I had to shell out several hundred dollars to get it installed eight or nine years ago. It is the only thing that allows me to play non-radio, non-CD music in the car.
So this 4th gen iPod (B&W display with a stupidly-low pixel count) is brought into the house every couple months to be updated with the newest, hippest songs that I own (e.g., Monster Magnet’s 1998 almost-hit “Space Lord”) before being carefully placed back into the car and plugged back in. I think it has a whopping 16 GB of storage, but that’s still thousands of tunes.
I also have a 3rd generation iPod Nano from 2007 – the one year they made the squat, square form-factor:
Solid-state drive, 8GB and a lithium battery that lasts for days. I still use it on a daily basis.