What shows do you remember where the hero got the power item at the end?

The obvious is Endgame when Iron Man had the stones.

The next is The Last Dragon, when Leeroy had the Golden Glow.

I feel like it's a trope of the 1980s on, but I can't remember additional examples.

And I definitely don't remember the earlier examples.

What shows had that oh so satisfying "oh really? Do you now?" Twist at the end of the story.