The Valar announce that they've done as much as they can in Singularity (they can't bring back peoples' babies in that critical period either, but they can get them earlier versions) and are setting up portals between there and Sanity as soon as they are confident they've cleaned up the plague. A bunch of Elf architects have this wild idea for a fivedimensional city where alternating intersections are interdimensional portals between various Valinors and they get eagerly to setting it up.
This one is understaffed; he is barely looked at on his way in, people are running around so much.
The person reaches into a drawer and hands him a packet. "Directions and specifications," she says. "Payment will take up to a week afterwards while the work is quality checked."
What competent people. "Thanks so much." Are the specifications specific enough he can just do what it says on the packet -
The quality check will find things exactly as advertised. He comes back to return the packet in case they want it.
Public transit is pretty automated these days so nobody gatekeeps him. He gets weird looks. A kid about his age maybe recognizes him.
Trains are real fast these days. He's there in sunny San Diego in short order.
He tries making the models of the places he's going in dry ice so he doesn't have to throw them away. They hurt his fingers but are lots of fun. He finds another address.
Are there any other ones in this area? Not that he especially minds sitting on trains, it's a nice break from Milliways.
Eh, whatever. He'll keep doing this for a couple days until it's time to go to that kid's summoning exam.
He gets a variety of reactions ranging from steadfastly pretending this is normal to confused acquiescence to being ejected from the building, and then exam time!