How many Hogwarts students from each house does it take to change a light bulb?<<< they need one more Ravenclaw to point out that Hogwarts doesn't even use lightbulbs. Hogwarts doesn't have electricity.
--------No seriously, you don't understand. I am 24 years old. But you tell me when and where and I'll be first in line with my glasses and my wand. --- this is what I've wanted since the first Potter movie!
As a Hufflepuff, I wholeheartedly accept this headcanon. Hufflepuffs are the ones who care about people - helping people and taking care of people. So it totally makes sense that the RoR would've been created by a Hufflepuff.