I use my Glocusent Willow reading light for all kinds of things (it stands on its own) but I especially like that it gives my non-lit eReaders a warm light. I'm currently reading a book on my Kindle Keyboard using this light (at night).
At any rate, Amazon has the two pack version of these on sale for $9 after the sale price and applying the 10% coupon. (The coupon may be a Prime thing only, I don't know.)
At any rate, for those who might be interested...
https://www.amazon.com/Glocusent-Lig...70&sr=8-3&th=1