Have it your way (even when scoring in La Liga)

Like many of you, I'm a fan of a good marketing gimmick- done tastefully of course. I found this rather interesting piece for Burger King yesterday. It even comes with a how-to guide!

I'm not really sure if I like it; yes I know it's worth a chuckle, but does it do much more than that? Not really. Then again, does it have to?

I guess it's been done now, so what's next? Ideas on a postcard please (I promise if I ever use them on a live brief I'll give you credit, honest)