oh, amazon is giving $5 free app store credit today to anyone who installs their amazon app installer and gets any app (free apps count), I used bluestacks to give my two amazon accounts (mine, wife) the $5 credit without having to install it and shit on my real phone/tablet.
simply install bluestacks, run it, let it update and shit, then run the amazon app (should be in the top somewhere), let it update, then sign in to your amazon account, get any free app, and you should be emailed that you now have a $5 amazon app store credit good till 1/31/14. Plex for android is $5 on the amazon store, minecraft is $7.
amazon app store apps require you to keep the amazon app on your android device, so something to consider before you use their shitty app store to much. they do give one app a day free, but the amazon app is supposed to be a bit of a battery and resource hog.