On the topic of popular children's shows being used to market snacks, here's Smurf-Berry Crunch Cereal. We feel like they missed a trick by not making the cereal blue, but perhaps even children couldn't be tempted by blue cereal.
As was the standard for many cereals of the era, there was a free gift inside every pack. Smurf-Berry Crunch Cereal came with shiny stickers, which inevitably ended up all over your bedroom wall, your lunchbox, and your face.