
The Hanna Barbera characters used to be EVERYWHERE. Universal Studios Florida had a nifty flight simulator attraction (along with a gift shop) that is now themed to the Nickelodeon characters.
These pins of Top Cat and Scooby Doo were purchased back in 1994.
I was at Universal Studios Florida a few weeks ago, and somehow Scooby Doo is still featured on merchandise for the park, but I don't think he actually is tied to an attraction anymore.