The USA had it's own unique pre-order (or simply just buying) bonuses thrown in for Sonic Chronicals: Dark brotherhood. At GameCrazy or GameStop you could get the Stylus 3-Pack if you pre ordered. However, at Circuit City, you could get a Nintendo DS skin (plastic sticker type item that is applied to the system to decorate/protect it) The skin is somewhat abstract though, being mostly a vague sky. It has a foggy graphic of Sonic on one side, as seen on the game's cover, and the logo on the other. It's an all-right skin, but not particularly super-stylish. Still, it's nice to collect, but will only be on offer during the first little while the game is sold.

As seen hear the styluses a dangly charm on each one. You get the set of all 3, with Shade (a female enemy) Sonic in a new pose (hands on hips) and Knuckles in a rather standard fists-up pose. At an inch each, the charms are pretty detailed for their small size. These were also at EB Games in Canada as well.

This is obviously a company-made photo at the top. 

Here are the fan photos of the styluses. They came in a bag with actual cardboard header on it (usually bonuses are minimally wrapped) As you can see in the photos there's an error on Sonic (his nose is white) but otherwise they are quite nice. The upper right photo compares them in size with the DS box. The figures are made of the same cut plastic as the USA modern Keychains. Which really holds detail well.