It’s not worth shipping and handling, it’s beaten up, and I don’t know anybody who wants it. Nothing is upgradeable, unless you count inserting a microSD card.
Of course I could use it as a janky media server or a dumb SSH terminal, but I’ve already got other machines for those jobs. Or I could recycle it, but what’s the fun in that? Suggest me your wackiest programs to try, dangerous distros, or most unorthodox setups to make use of it.
I don’t think there’s any useful way to put it to regular use for yourself, but you could:
*though i imagine the battery is not in good shape given your “beaten up” description
Instead of Debian, why not tinyCore?