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I think the natural lighting is a good suggestion. You should also take the photos into Photoshop and bump up your color saturation about 5% it makes the image more eye-catching.
You can also use Photoshop to gausian blur around your item so that the focus is sharp on the object and less sharp everywhere else, it's a pretty good effect.
I usually use white for a background, or some sort of outdoors scene that I can blur.