Chapter 45 45: Easter Egg

I've already chosen two Easter eggs for the Pirates of the Caribbean universe, one is already gone, the other will take a while to appear, but I need another one for a plot I'm writing now.

Instead of searching for an interesting movie, I decided to let you guys help.

The Easter egg itself needs to be about adventure and preferably related to the sea or some treasure and not a long sequence of films, it should end quickly. It doesn't need to take place exactly in the 18th century, but it should be close enough so I don't have to spend too much time adapting the era.

So? Any ideas?