And he unhappily goes home and waits for the weekend.

And Miranda asks Timothy if she may have Hogsmeade privileges please?

"Shopping to do?"

"I will probably stop at the bookstore but actually there's an experiment that needs to be conducted off the Hogwarts grounds."

"Oh? Well, far be it from me to stand in the way of the march of progress. You have excelled this year in your studies and in your conduct; you have demonstrated ambitions and character worthy of Slytherin house. Have a lovely Hogsmeade weekend." And he hands her the token for it.

Miranda giggles and clips it to her tie. "Thank you!"

"My pleasure!" He rather radiates sincerity. "And do tell us the results, if it's not a secret."

"It's not a secret! I'll take detailed notes, of course."

"I expect they'll be met with much enthusiasm."

She grins at him.

On Saturday morning after breakfast she does some homework in case this takes all day and then bundles up and borrows a school broom and goes to Hogsmeade and (stops in the bookstore and) sets up a voltaic pile just like Minor told her.

It totally works! She can generate non-biological electricity!

Yay! She writes down her observations meticulously and then she packs up and goes back to school and looks for Minor.

He's sitting out in front of the school.

She presents him with her results.

"Well. That proves it's something about Hogwarts, then. I hope the eels are okay once they arrive. Thank you."

"You're welcome. I hope the eels are okay too. Are you just going to put them in the lake?"

"I am hoping they arrive with care instructions."

"I suppose they must be being transported in some kind of container so maybe they can just stay in that."

"Yeah, maybe. Wouldn't be the weirdest ongoing experiment in the Ravenclaw common room."

"It wouldn't? What else have you got in there?"

"Uh, there's someone who was trying to get mandrake baby animals, except instead they just got these potato-bunny things that have really annoying shrieks and eat nothing but caviar but are incredibly cute, so there's a Silencing Charm around their pen..."

"...I want to see a potato bunny."

"It's a shame you're not a Ravenclaw! I could ask for permission to give a potato bunny away?"

"I don't want to own a potato bunny," she sighs. "How very not allowed is it for other House people to be in the Ravenclaw common room, I think the Hufflepuffs are pretty relaxed about it but the Slytherins really aren't..."

"I guess if you got the riddle no one'd really have much ground to stand on..."