@Hidemi_mad_dog has uploaded a photo of some KINGDOM HEARTS-themed character straps. While we don't have any details about any of them yet you can view the photo below.
Update 1: Hidemi Matsuzuka has uploaded new photos of the "KINGDOM HEARTS Character Straps", showing each strap in much greater detail. These can be seen in our gallery, below.
Update 2: Amazon.co.jp have created listings for the KINGDOM HEARTS Character Straps, revealing that they will be released on December 27, 2013. The straps will be available at a price of ￥1,340 (approximately US$13.68) each. Thanks go to @aibo_ac7 for the find.