Creation of the Marauders Map. >>>> It's because the map doesn't rely on vision. It shows people's physical place, which is still possible to find if you are under the cloak. Death could not find people under the cloak because Death was relying on vision.
"It tests my ability to keep calm & not slap a bitch.<<< I'm a ravenclaw! And gryffindor! I got sorted by the actual sorting hat like Bonnie (Ginny) and we both got in ravenclaw when we should be Gryffindors.
Harry Potter is the default fandom. Everyone is born into it. We join other fandoms, but even if we say we aren't in the HP fandom, we really are.<<--it's been some time since I've read the books but this is relatable