Just last week in another thread, I posted these cheapy hard "cases" that I use when I toss a reader into my purse or suitcase
https://www.mobileread.com/forums/sho...8&postcount=11
And Walmart is your friend.  I got a pretty quilted cranberry-colored net book case for my iPad.  Then put a sheet of foam inside.  As long as I have foam to go against the screen and protecting it from torsion, I feel safe.