VOLCANO
Kaminari deviously rubbed his hands together as he parked his wheeled cart inside the school's gymnasium. "Compare all your projects to mine, then give up! Mine's going to win for sure! Behold! The wonders of Earth's volcanic activity!"
Kaminari whipped away the tarp, unveiling a lumpy, crooked papier mâché volcano.
"Mine's better," Sero said.
"Not scientifically possible!"
"Sure it is. At least mine isn't crooked."
Sero unveiled his project, a volcano made out of elbow tape. Kaminari shouted, "You copied me!"
"Dude, everyone did baking soda volcanoes. Take a look."
Mineta's gushed out tiny purple spheres, while Ochako's bubbled into floating globules of chemical froth. Sato's spat chocolate fondue, while Todoroki made his erupt in a column of fire.
"Aww come on! I thought I was being unique!"
"If you wanted to be unique, you should've made a potato clock, kero," Tsuyu pointed out. "It would tie into your Quirk, at least."
"W-well, mine has red food dye! So there! I win!"
"Dude, you dyed yours too!" Kirishima unveiled his spiky, muscled volcano. "That's so manly! I had some extra hair dye lying around, so I threw it in with the whey protein."
The volcano erupted as Mineta walked by and spewed directly in his mouth. His torso erupted into massive biceps and pectorals, immediately unbalancing him.
An eighteen-wheeler crashed through the far wall. Butlers leapt out and dragged out a massive replica volcano, made with locally sourced volcanic rock, adorned with fresh lava, and dusted with gold for good measure. Momo escorted her project in, musing, "Do you think I should have gotten the basalt flown in from Hawaii? I would rather not lose because I used substandard materials."
"Rest assured, young miss, we have sourced the finest stone locally available. I shudder to imagine what those Americans would think suitable for someone of your standing. No taste, those Americans."
"Quite right, Alfred. You can set it down over there."
The butlers set the volcano down, while Kaminari picked his jaw off the floor.
"Alright, time to judge your creations!"
Bakugo made his spew out at a high enough pressure to perforate a laptop. Iida's sped off like a rocket, and Tokoyami's gloomy edifice spurted glittering pink slime, much to his annoyance at his Quirk. Kaminari's gave a fitful gurgle, like a dying man's bloodied last gasp, before collapsing in a gentle exhale of musty air. Momo's erupted in a shower of rubies and black diamonds, and Mina's ate a hole through the floor.
"Alright, Izuku, where is your project?"
"You are standing on it."
Everyone looked down. The floor was made of floor. Before anyone could enquire further, a loud rumbling rocked the school. The ground heaved, and from it burst forth a titanic column of baking soda froth. The sky darkened, and the wind stank of vinegar. Glops of fizzling reagents swept people off their feet and engulfed cars.
As cities toppled and the world fizzed over with caustic foam, Nezu anded Izuku his first prize ribbon.
500
Nezu: since I am a science experiment, I win by default
Izuku: *exists*
Nezu: and there goes my winning streak