Nintendo explains how real-world products came to appear in Chibi-Robo! Zip Lash

Coming from a NWR interview with Nintendo Producer Risa Tabata...

"We were trying to think of ways to express [how tiny Chibi-Robo is] to give you a point of reference to show you how small he is in real life. Since this time, there are no people around, [the snacks] something we can give you to compare. Because the game itself takes place around the world in various places, we thought coming up with different monuments that you see around the world, such as the Statue of Liberty or the Pyramids, but that would be way too big to use as a reference for a tiny little robot. And that's when I thought 'What's something that's around us all the time, and makes people happy to see or to find in game?' I personally also love snacks too, so I thought this is a great idea to implement in the game."