I've got one of those oddball 5th-gen iPods without the rear cameras, and even today it is the most incredible thing. A hair over 6mm thick, it's the thinnest thing Apple's ever made and the most ridiculous tiny/usable computer I've ever seen. I can still use it for video callss, and even (thank you, LetsEncrypt!) for the reasonably-safe Web, though iOS 9.x is long abandoned.
Even now, 12 years after it was released, it still feels like I'm holding a postcard from a better possible future.