USB Power Adapter + old macbook extension cable

[GadgetX]

I just discovered something that I think some of you might find useful. The old "extension cables" that come with macbook chargers work with the iPad power brick, making it work exactly like this.
http://store.apple.com/us/product/MC359LL/A?fnode=MTc0MjU4NjA&mco=MTczMTA1Mjg