If you're looking for a new task specific device (e.g. not one that runs Windows 10 and all its distractions) then have a look at https://remarkable.com/ ( https://news.ycombinator.com/item?id=24295443)
For writing, have you checked out the remarkable? ( https://news.ycombinator.com/item?id=24295443 )
It's an e-ink display with paper like friction and if you really want to, you can shell into the linux system it runs on.
If you're looking for a new task specific device (e.g. not one that runs Windows 10 and all its distractions) then have a look at https://remarkable.com/ ( https://news.ycombinator.com/item?id=24295443)