Club Nintendo is set to close later this year, meaning that you'll need to spend your Stars before they evaporate. Chances are you'll have plenty of them thanks to the New 3DS and New 3DS XL. Thankfully, Nintendo has made the smart decision to release a massive slew of downloadable 3DS and Wii U games starting at 800 Stars.
From The Legend Of Zelda: A Link To The Past to Duck Hunt, Advance Wars, Art Academy, Metroid Fusion, Golden Sun and even Mario Kart 8's Zelda DLC, there's loads to choose from.
Many thanks to RagingSharks who posted the details on HUKD, and FantasyDeals for tipping me off on Twitter.