Today and tomorrow, Prime members can get Amazon's Dash Buttons—normally $4.99 each—for just $0.99 using code "REVIEWDASH" at checkout (limit three per customer).
If you haven't encountered the Dash buttons before, they're little branded buttons that link to your Amazon account and let you push the button to re-order whatever product the button links to (Cheez-Its, Pop-Tarts, Milk-Bones, and so on).
Not only can you get your very own little Dash buttons for $0.99, but Amazon is actually giving a $4.99 credit for each purchase—yep, they're essentially paying you $4 to buy a button.
Because it's limited to three discounted Dash buttons per Prime customer, your max gain from this button bargain is $12. But still, it's not every day you get paid $12 to push buttons—dash off and get some!