Well let me see I read on & at one time or other slept on 10" & 7" Fires PW3 Kobo 6" Aura & Insignia 10" Tablet ... Nope No Damage
I think the Kobo Aura 1 Would be fine. But the Kindle Oasis Nope That skinny side would Bend or Snap.... To Bad it Not designed for the Handicap
WOW eBay has a few @ $209 US price!