Some credit for #6 to HPMOR (spoilers for early chapters):
“In Harry Potter and the Methods of Rationality, there’s a scene early on where Harry lists out numerous ways of utilizing only the materials in the classroom to defend against attackers. He goes fairly overboard, naming things from the school robes (which could strangle someone), to the air (which could be taken out to asphyxiate everyone), to the bones of Hufflepuffs (which could be sharpened into bones as weapons).” https://mindlevelup.wordpress.com/2016/12/03/intent-to-overkill/
Some credit for #6 to HPMOR (spoilers for early chapters):
“In Harry Potter and the Methods of Rationality, there’s a scene early on where Harry lists out numerous ways of utilizing only the materials in the classroom to defend against attackers. He goes fairly overboard, naming things from the school robes (which could strangle someone), to the air (which could be taken out to asphyxiate everyone), to the bones of Hufflepuffs (which could be sharpened into bones as weapons).”
https://mindlevelup.wordpress.com/2016/12/03/intent-to-overkill/