If holding the Wiimote is just too easy for your tastes, you might be interested in these new Riiflex Dumbbells.
Designed to add resistance to your workouts in Wii Fit and Wii usage in general, these weights still grant access to all the remote's features - including the B button and IR sensor. They come in two flavors:
These things are still in the prototype stage right now and aren't for sale yet. A patent is pending.
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