Which are the common ingredients required to run a successful chocolate lab?

You're asking about the ingredients for a successful chocolate lab, but it seems you might be thinking of something different. There's no such thing as a "chocolate lab" in the sense of a research facility.

Perhaps you're thinking of:

* A chocolate factory: This would require ingredients like cacao beans, sugar, milk, cocoa butter, and various other flavorings.

* A chocolate-making class or workshop: In this case, you'd need chocolate, molds, tools for tempering and shaping, and instructions.

* A chocolate-themed event: This might involve decorations, chocolate treats, and activities related to chocolate.

Could you please clarify what you mean by "chocolate lab"? Once I know what you're aiming for, I can provide a more specific answer.