Six matching Aluratek Libre Pro ereaders - turns out that they are the ONLY ones that don't cause eyestrain for Lil Sis, who is on a shuttle bus from her area to downtown Houston twice a day for 45 minutes or so. There is just enough light from over the seat for her to read these, they are small & lightweight - so they fit in her purse, she has a spare charger to take to work with her (or leave the one on the charger at home) so that she always has one charged & ready to go.
She spent a week in the hospital last year and having something to read (with several hundred books on it) was a life saver - as soon as someone brought her the charger from home.....one charged while she read the other one.
Mom liked the one Lil Sis got first - so Mom got one, too. Now they both have TWO (so that they have a spare - Mom reads while waiting for Dad to get out of the doctor's office, while he's driving the thirty minutes to the doctor's office (they live in a small town), and sometimes while on the back porch - these are the e-ink that you can read outside or inside without glare.
And I had one for DD - but she couldn't use it at work (security issue - no electronics) - so now I have two. One of them has poor battery life - so having a second one with me isn't the worst thing to happen to me (I can remember sitting in emergency rooms, doctors' offices, and a few other places when I would have LOVED to have one of these thing).
The only drawback is that reading is ALL you can do - but no one knows if you are reading Harry Potter (yes), Shades of Gray (no), Narnia (maybe), or even a book of classic fairy tales (yeah, several). Because there is no book cover with the name of the book on the spine - what you are reading is not going to attract attention, spoilers from bystanders, and (no games & no internet connection) - fewer SS will ask you to loan* it to them or one of their cchhiillddrreenn!
*Because it isn't in color and can't play videos.....or games...or let them check their email, Facebook, or Twitter!
And the last time I got stuck in an airport - it was much easier to take something the size of a small paperback with me without sticking it in my purse than it was to turn off the laptop & put it back in the carrier. This thing fits in one hand or is quickly shoved in an outside pocket of your purse, carryon tote bag, or even a larger jacket pocket!