It's a new month in Animal Crossing New Leaf, and that means a new exclusive downloadable content (DLC) item is available! This month's DLC is a Palm Tree Lamp. As with other other DLC items such as the Rainbow Screen, you can get the Palm Tree Lamp from Pelly or Phyllis in the Post Office on Main Street. To get the Palm Tree Lamp, ask one of the friendly Post Office Pelicans about a gift, then agree when they ask you if you want to connect to the internet to receive limited time items. Once they finish searching, they'll present you with your gift.
This Rainbow Screen DLC is only available for a limited time (until July 31st, 2013), so if you haven't gotten it yet, head on down to the Post Office and collect your gift!