Nintendo filed patents for a bunch of addons for the Wii Remote. While some of these things may someday be manufactured most of them look pretty useless or even ridiculous:
Each of the designs detailed in the application focuses on fitting the Remote into or onto another, everyday object. For example, one sketch shows how the Remote could be strapped onto the topside of your wrist, which could be useful for fighting games, whilst another describes how the Remote slides into a wired gun that’s not too dissimilar from the one used in Duck Hunt on the NES console.
A fishing rod accessory that accommodates the Wii’s Remote in its reel housing is another concept that seems fairly sensible. However, most of Nintendo’s other designs are verging on the ridiculous.