And Cam asks various demons if they know anyone who wants a kid - nice people, please, not random creeps - and gets referred to four locals and one person's out of town friend, who they can then proceed to interview.

Yay! (Can he read peoples' minds while interviewing, just a tiny bit, to make sure they're not secretly horrible)?

It seems less invasive to do that when they've been summoned; we can have another interview step there and ask them if they're okay with it.

This seems reasonable. HI, local demons who might want a child! I am a child!

Local demons who want a child think he is adorable! A couple of them are up enough on the news to recognize that he is an Elf child (although they assume Space Elf) and not a human one; these ones wonder why, since Space inhabitants know how ex-summoners work, his actual parents have not just summoned him back?

"I don't know! I didn't think I even died but I told someone I hadn't died and they said yes I had. Maybe my mom and dad died too but if they did I don't think they are demons, I wrote them a note about where I made my house."

The demons accept this explanation. They are all trying to seem like nice adoptive parents and doing various amounts of a good job at it; some of them seem like they'd be nice for some kids but just not quite a good fit with Fëanáro in particular.

Is this enough information to summon them to Space and tell them that Fëanáro's parents did figure out how to summon him back after a while but here is a kid who needs parenting, would they like a long-term summons?

Yep! Although in case further filtration rules out a largish fraction of these demons they should maybe check a few more cities if Fëanáro's up for it.

He is so so up for pretending to be a demon! It is almost as good as really being a demon!

It's very cute. All the would-be adopters think he's very cute. (But they think he's a very cute demon.)

And eventually they have thirty people!

That seems like a good starting population! To Space! While they fly somewhere they won't be noticed vanishing he chatters about what his backup wish should be. 

Cam is happy to evaluate suggestions relative to the current information about what things are and are not experimental and what things are and are not likely to be within a reasonable risk tolerance.

Ability to put the contents of books in his eidetic memory just by touching them? Ability to conjure just written works, if he can't be a demon in full? Has anyone tried for mind-control powers that'd work on a Vala and sworn only to use them on future Melkors...

"The book thing's almost certainly safe. Conjuring written works - you might wind up with an adjacency limit but that's probably safe to try. Luster Findekáno has some mind control powers but we don't know if they'd work on Valar."

"Maybe we should find a nice Vala and ask if they'll let us try. I think my backup wish will be for books."

"And you're pretty sure you're not going to regret wishing to be a demon in twenty years or whatever?"

"Do you regret being a demon?"

"No, but I didn't knowingly use up a scarce resource on becoming one."

"It's not that scarce, there are lots and lots of people and even if there turn out to be a lot of things only Fëanáros can wish for, we can just fork more space Fëanáros."

"Your, personal wish is still scarce. You get one."

"Sure but anything actually important other people'd be willing to wish for and of unimportant things me being a demon is the best."

"Which makes sense if you think you will still think it was best forever."

"I think we will keep finding new magic and it'd be silly to wait until we've found all of it - might be infinite - before I decide what's best."

"Sure. That's not the only reason your opinion might change, though."