Moving == carrying heavy boxes, lots of them.
Suboptimal.
Getting rid of stuff is imperative!
If You’re so inclined, You’ll find sloppy teardowns of 3 devices below. Mostly images and a bit of video footage at the end.
1) DNT mp3 player (256MB, 2004, Amazon, €111, single AAA, 10h runtime)
2) Samsung 2.5” HDD (30GB, 2004)
3) Hitachi Microdrive (CF sized, 2GB, 2003) – some violence included
4) Teardown video (~44 mins) – some violence included