Various items intended to give good luck– lucky rabbit’s foot, lucky horse shoe, luck of the Irish, etc.
 
“When it comes to cartoons, no one is unluckier than the antagonist. While the protagonist may have some occasional dips in fortune here and there to keep things interesting, they’ve got a laser-guided happy ending waiting for them at the end of the episode. Antagonists don’t have that luxury. Instead, they’ve got laser-guided humiliation and/or pain waiting for them, and they’ve got to be incredibly lucky to avoid either one. “