I have used a Bookgem for a couple of years. It's tiny and holds the my Aura HD firmly. I mainly use it while sitting at a table, though it can be used for reading in bed. If you want to buy it, don't buy from the page on Amazon which, for some reason, features a reseller who sells the product for $8.00 more than the company itself and with double the shipping charge. Either go to the additional seller page which includes the company or go to Bookgem itself. Here's a link:
http://www.bookgem.com/