No go for angry birds. Gmail can be accessed via the web browser (albeit with limitations such as being in basic mode).
Kindle reader directly I don't think so, but you could look at either of the threads here
Cool Reader for Kobo and
Koreader running on Kobos (all of them, hopefully!).
If you're hoping for a way to read (for instance) the CEV Bible bought from Amazon, not sure either of those will help.