Orbitz was a 1990s fruit drink containing brightly colored gel spheres suspended in the bottle. Its label used upside-down text so shoppers would rotate it and make the blobs perform. Marketed to teenagers and discontinued shortly afterward, it transformed finding something floating in your drink from a warning into the entire product.
Sources: Packaging World · BevNET brand archive
Image: Scott Schiller, CC BY-SA 2.0, via Wikimedia Commons.