Here is some strange artifacts and legends:
The Plumed Headdress of Cosa Rara: The entire legend of this episode is based around a conversation with a horse! One of the dumbest legends on the show.
The Bifocal Monocle of One-Eyed Jack: This episode featured both a stupid legend and artifact. And then the producers had the nerve to draw an eye in the artifact itself.

The Snow Cone of Mount Kilimanjaro: Season 3 did a good job on creating stupid legends, but I think this is the worst one on the entire show! I mean all it is about is creating a dessert from snow. And then the artifact doesn't even look like a snow cone.

The Golden Pepperoni of Catherine de' Medici: Okay, its bad enough that they made an episode based on a piece of pepperoni. But then we get names like "The Great Linguini" and Catherine de' Medici had nightmares about it too.

The Red Sash of Tokugawa Ieyasu: "You are grounded for two weeks with no TV!" Yeah, I am sure they had TV's back during the Tokugawa era.

The Mystical Spellbook of the Imperial Wizard: Talk about your stereotypical episode. I mean the female characters were named "Wing Ding" and "Ling Ling".

Galileo's Cannonball: This legend was good until they brought up how Galileo created pizza by dropping cannonballs from the Tower of Pisa.
The Mummified Hand of the Egyptian King: Another stupid and cheesy legend, along with more lame names to boot.
