nostr:npub1f8e6w3kg6cptk4ljl09ua3vezr7gws4jcuwyvzdnpytsnlp2yd6savzu5u Kobo: You get pretty good hardware, you don't need registration if you just insert an empty user line in the SQlite database reachable via USB Mass Storage (where you can drop your files), enabling developer mode grants you root access via telnet+ftp.