Not content with simple 2D size comparisons, Elchibo at Following Revolution
decided to make his own Nintendo DS lite using some cardboard covered with electrical tape, built to Nintendo's size
specs. It's almost a good idea too, if they hadn't shot it on a black background with a shaky out of focus camera! It does help to (sort of) see the size comparisons this way; the DS lite doesn't look much smaller than the DS. How long before someone makes a rendered 3D mockup showing the two go head to head?
[Update: Video has been updated with a white background, so now you can actually see it!]
[Thanks, Mark]

