An often underappreciated DS accessory, the wrist strap that came with the original DS does more than keep you from dropping your DS. It also doubles as a stylus. The wrist strap's stylus was beneficial to the players of the game Metroid Prime: Hunters, and, since Kid Icarus: Uprising has the same controls, I would recommend getting one to better your KI:U gameplay experience. If Nintendo had included one of THESE instead of the stupid plastic stand with the game, no one would be complaining about the controls, or cramps.
Here's the product page for it on Nintendo's online store:
Product Page