Download the Kindle App to your phone and get $5 amazon credit on Qualifying Items
I received an email from Amazon this morning saying that for those who download the Kindle app on your phone (android or iphone) and sign in with your Amazon account (email and password) you will receive $5 credit that will go towards QUALIFYING ITEMS on Amazon. This does NOT get applied to any and all items on Amazon, from what I've seen it seems to go towards Amazon specific items such as Echo Dot, Firestick, etc. If something doesn't work or if something doesn't make sense, please tell me and I will explain it; I did this myself and it does work.
As a note, when I did this it credited me $5 but stacked an additional $3 on top of it that credited at the same time. I don't know if it will do this for everyone else, but it did do it for me.