Introducing the Riiflex dumbbell enclosures for Wii remotes. There are not available just yet, but look like a great idea. It will be available in 2.5kg and 5kg models, although the final design is not fixed yet.

The neat feature is that these don't enclose the Wii Remote entirely, the buttons are still accessible.

Hopefully it will be possible to use the nunchuck with these as well as the Wii Remote. This will make the cardio sessions in Wii Fit more worthwhile, especially boxing.

Not sure I'd sign up for the pre-order scheme if I were you though.