Power Pal (and co-host of The Power Records Podcast) Chris Franklin sent me this pic of a Wonder Woman drinking glass that uses the Neal Adams artwork from the Wonder Woman: The Secret of the Magic Tiara Power record!
I didn't know this existed, and Chris tells me there's no other copyright data on it to indicate if it was part of a larger line, some sort of merchandising campaign, etc. He does point out that the artwork has been redrawn slightly, to include Steve Trevor in the background. It's a handsome item, to be sure.
Considering that a lot of Power Records were done by Adams' Continuity Studios, it shouldn't be surprising that a lot of the artwork was deemed worthy for merchandising, given its iconic nature. Still, this is one of the few examples I can think of something from a Power Record was reused like this.
Thanks Chris!