Plastic card, metal tin
It's a gift card in a little diamond plate looking metal tin.  The back side of the tin has a clear plastic viewing window the exposes the back side of the included gift card.  The tin could be used to hold other gift cards or small parts after the recipient takes the Amazon card out, however the Amazon symbol is printed on the tin and might look odd giving a Home Depot gift card in it.
Rating: 5 stars