Obamium ore
Obamium ore is a piece of magic junk hidden under the White House when Obama started being president. It can take the heat of 1500*C and is tough enough to make cool weapons and tools that can punch holes in walls.
My mom turned Obamium ore into a hammer and now she can break bricks without sweating.
My dog ate Obamium ore and now he can bite through metal.
My uncle used Obamium ore to make a sword and now he fights dragons in his free time.