"Ahahahaha! this is greaaaat!"

"I knoooow!" Temperance agrees before speeding up even more.

She's just holding on and giggling.

Walta enthusiasm is contagious!

She does get kind of tired after about half an hour. Broom-riding uses muscles she isn't used to.

That is okay, they can rest by the lake, Temperance even has snacks.

Walta goes back to assembling generator unit-precursors. If the plates work as described, the thing will weigh about five pounds and run a phone or laptop fine, though not a microwave oven if she gets it in her head to hook it up to one of those, and should she give it an attached head-sized freezer for miscellaneous best-kept-cold things or not?

And enough time passes. Temperance announces. "It stable, now I just need to brew a potion and dip the discs to make it permanent. And I can totally make you a freezer."

"That's a no to making a freezer attachment then - this thing will just charge your phone. Okay. It's done except for the disks. Let me show you how to put them in when you're done and you can change them out if the spell ever breaks."

"Sure," and Temperance observes.

"-Don't you need to potion them first?"

"Oh, sorry, I thought you were going to show me then I was going to potion them. I'm going to grab something from the bar to dip them in."

She is back with a wide bowl. She is starts the process: mixing ingredients; calling the goddesses names; dip in; literally rinse; repeat.

And after a few minutes that is done.

"Okay, you put them in this slot here. Tighten the screws - you'll need a screwdriver I guess - then say the activation word and squeeze this little trigger and it'll start buzzing away. Squeeze it again to turn it off and try not to jostle it around too much while it's running?"

Temperance follows the instructions as per Walta's orders, she says the activation word and squeezes the little trigger. Does it work?

It vibrates a bit and settles into a low whirr, kinda like air conditioning in the background of whatever building. And it starts charging her phone.

"This is so cool!" Temperance says spontaneously hugging Walta.

Uh what hugs?

She recovers from surprise, "Thanks! I love making clever stuff like that."

"It's pretty clever!"

"Thanks! If only I could make more of these magic metal plates once you're gone."

The device makes an ominous clicking-grinding noise and comes to a stop.

"Uh... did I break it?"

"Ugh, no, something's unbalanced, my fault. Maybe I didn't give enough tolerance for thermal expansion, but that shouldn't be a big deal. Hit the trigger again?"

Temperance hits the trigger.

It runs. Walta opens it up and watches the blur of motion and pays close attention as it grinds to a halt again a few seconds later.

"Yeah, I can fix this. I think."

"Do you need any help?"

"Mm- don't think so. It's fiddly and I don't think you can convince things not to expand when they get hot, doesn't feel easy from what I can gather about the magic, much easier to just shave it down some." She says the activation word again and lets the plates return to normal before starting to take it apart.