I've had a Kindle for about a year, and I love it! You can also get a version of Kindle for some phones. Because of my job I spend lots of time waiting in lobbies, and since I always have my phone with me, I always have something to read--check that out on the Kindle site.
I've made the Moda covers for myself, my husband, and several friends. I got both my daughters Kindles for Christmas (sssshhhhh!), so I made covers for them, too. The new Kindles are a bit smaller than mine is, so I had to re-do the pattern a bit. Neither one of my girls is quilt-crazy (brats!), so I made covers with just one fabric for the inside and one for the outside, then quilted them in different ways and added a decorative button to hide the Velcro. I'm quite pleased with how they came out. I think what you did on the inside of yours is adorable!
By the way, there are a lot of free books available on the Kindle site--check it out! Some of them aren't half bad!