Is there anyone within your circle of friends or family that would benefit from having the Samsung Galaxy s8 as a gift ?
A teenager maybe who would love it as a 1st phone ?
Samsung have a recycle option.
If you Google there are tech sites that discuss using older Samsung phone's for different uses.
I usually sell my phone's on.
I have a Samsung Note 10 + as a back up phone.
Current Phone > Samsung Z Fold³ 5G.