Just to see if it would work, she tries wishing for her invisible and invisibling chain on a square. It remains where it is. "Okay, so that is going to take a pentagon," she says.
"Yes. I don't doubt I could make a plain chain with a square, but the permanent invisibility power is apparently a big deal."
...A thought strikes, and he giggles.
"Does the book say anything about what kind of coin you'd need to wish for, like, a bunch of small things at once?"
"Elias seems to prefer a strategy of handling small things one at a time with small coins, like his rat bites," she says. "But if you need to do a lot lot of small things, you probably want to cover that with a permanent skill or power from a pentagon or hexagon. And if they're really small, you might be able to handle a bunch in one shot with a square. Why?"
"Read the book first," he says. "I don't wanna spoil it. You'll know when you get there."
"Are you aware," Bella says, "that I don't like mysteries?"
"It's a really short book," he says. "You could probably get to the right part before the cake's even done."
Bella looks at him, and then puts the magic book away and pulls out Alice's favorite instead. She opens it up again and begins to read.
This is a poor long-term strategy, though, so after a minute he turns all the way around.
"Well," she says. "I think Harlan Ellison was terribly annoyed with being hurried along - and I think he would have written a different story if his circumstances were instead prone to leaving him waiting, and waiting, and waiting, for someone who didn't care about his wasted time."
"Probably, yeah. But I like the way he wrote it," he says cheerfully. "So yeah, I wanna make a rain of jelly beans."
"Property damage," Bella says. "Possibly injury or death, if there are too many of them. Certainly disruptions of schedules, some of which are actually important - there is a reason ambulances are allowed to speed. Gosh, with results like that, who wouldn't want a rain of jellybeans?"
He sticks out his tongue. "Ruin all my fun, why don'tcha. Well, it doesn't matter that much to me if I rain jelly beans on people or not. I could rain jelly beans in the middle of nowhere and confuse the hell out of the next hiker."
"You'd probably do some damage to the local ecosystem, but at that point I'm just nitpicking," shrugs Bella. "But... The combination of you having this kind of idea and how impulsive I have seen you be doesn't add up to 'this person definitely needs magic powers'. I don't think raining the jelly beans in the woods was your first idea. I might want to extract some kind of agreement that if I give you a hex to turn into coinmaking abilities you run anything pentagon-sized and up by me first."
"...Okay, but we'd better make some kind of magic instant checking-my-stupid-ideas-with-Bella system, because if I'm off in Nevada or whatever and I have an idea I like that much, I'm not waiting for you to answer your phone. I'm just not."
"Sure, you can make us some hexes and bam, instant telepathy," Bella says lightly.
"Purely communicative telepathy," Bella says. "At least as concerns the contents of my brain departing it. Select notebook contents are it in that department; my thoughts are mine."
He waves a hand in a gesture of agreement/dismissal. "Sure, but you'd be okay with you reading my mind, right?"
"If that's something you want to hand me, I'm not going to complain about it," she says slowly. "Provided you word it in such a way that we don't wind up creepily sharing dreams or anything - I want to be able to put that sort of thing on pause, is what I'm saying."
"No shit," he agrees. "My brain is definitely a place you'd wanna be able to back out of in a hurry. But I mean, it's the same as the notebook thing," he lifts his up and wiggles it a little, "but better."
Bella nods cheerfully. She taps her own notebook with her pen and starts writing Charts of her own, for ways to quickly use up any coins that are in danger of being stolen, and depleting excessively tempting stashes. Me able to read pinball wizard's mind, is one of the items under "hexagon", along with "flight" and "no need for sleep" and "todo: look up list of X-Men".