"Okay."

She gets another name presently and hands it to Timothy.

"Thanks. Have a good day." And home.

She vanishes.

He has notes with all the 2179 legalese, now. He summons a new demon.

The new demon is also excited to try the curse.

Great! Break in eight hours?

Sounds good!

And once they've got a hundred boxes they can take them way way out in space.

The fairy and the widget and the boxes go zoom.

And hopefully the widget helps the fairy come back?

Eventually, yes! "I stuck 'em in the asteroid belt. I like this thing, can I keep it?"

"For sure!!! I think there should only be two or three more batches. Thanks so much for the help."

"You're welcome."

And they track down Dementors. It would be boring even with the flying, except one of them hurt Cam.

How's this demon feeling at the eight-hour break?

This one still likes it!

Oh good!

More Dementors.

There are lots. The fairy puts them all far away.

Romania has the good sense to keep their Dementors - and it looks like most of their neighbors' Dementors, there're only three wild ones in a 500-kilometer radius who are not in a guarded pit! He almost regrets that it's not really feasible to tell them what he's doing. Dementor-hunting is too hard to do in the dark, and following the sun around the globe (Timothy is having so much fun!) only gets you so far; they take a break in a pretty mountain range in the Americas.

Sleeping breaks his mediocre Imperius.

Inconvenient but not exactly surprising; is the demon annoyed about it?

Not especially.

Then they can keep going when he wakes up!

Dementors get spaced! They move too fast to be easily caught even with the nap!

And when every last one is gone he returns to Hogwarts, which is buzzing with distressed Ministry Dementor handlers. "I think it'll be easiest to avoid them by dropping in from above, really fast, and landing in that courtyard, is that doable?"

"Sure," says his fairy.

They descend straight down really fast and land softly in the grass.