Is there any alternative with ~A5 size? I take a lot of notes, schematics, etc in paper notes a5 and I was thinking about moving to digital world, but definiet

Is there any alternative with ~A5 size? I take a lot of notes, schematics, etc in paper notes a5 and I was thinking about moving to digital world, but definietely not for the price of any remarkable device… Got kindle for reading - and I just love it, got back at reading everyday, and that was problematic with standard, paper books.