We wish we had some insight for you that could put this image into some different perspective, but it's exactly what it looks like: A lightsaber attachment for your Wiimote. You pay $35, you put one of them on your controller and it makes your pretender work better. Seriously.
As we've said on the Joystiq Podcast, if you're unable to have Wii fun without an attachment like this, you're tantamount to a fetishist unable to climax without the introduction of leather-bound dominatrices or rubber replications of farm animals. So, feel free to pick up the two-pack, but just make sure the store's empty beforehand, OK?