Probably one of the more random and awesome things I brought back from Japan. Plethora of these kinds of campaigns happen all the time and almost anything is involved- key chains from video games, anime, these little model cars, smartphone styli, etc. All of these are free and are attached to the neck of whatever beverage is running a particular campaign.
This guy is tiny and, as mentioned in the title, a wind-up. With rubber tires. Crazy stuff.