Also, I don't think you can buy B&N content for a Nook outside of the US, though I could be mistaken.
I can't believe you are asking What's a cockatoo mom, when you live in the native home of the cockatoo! I am not her, but I assume it means she has a cockatoo pet bird. I considered one at one point, but got a scarlet macaw instead. Was a better choice for me, as the last 17 years have proven!
Anyway for lights....I got one of these
M-Edge covers with a free light for $9.99, and I put my Sony T-1 in it. That light is really fantastic!!! I love it and use it for my Kindle, too. It is a soft light, with three lighting levels. If you can get one for that price, and if your 650 will fit in it, you should get one.