One of the creepier tech-related incidents I remember was many years ago when I wanted the Sam's Photofacts (a third-party creator of device specs and schematics, etc.) for a very old portable TV. Way out of date, but I was trying to help someone with it.

I mentioned to a friend that I was looking for old Photofacts, but I did not say anything about the TV. He scribbled an address on a scrap of paper, an address locally here in L.A. "Try him," he muttered.

I drive over. It's a small unmarked storefront. I go in, the bell on the door rings. Sitting inside, like the caterpillar in "Alice in Wonderland", is this little guy perched on a stool, with immense stacks of paper surrounding him everywhere. Total mayhem.

I walk up to him -- knowing that this was a waste of time and really wanting to get out of there -- and asked if he had the Sam's Photofacts for that specific very old TV model.

Without saying a word, he reached over to the pile of papers right next to him, took the TOP item off the pile, and silently handed it to me. It was the ancient one I needed. Stunned, I paid him the amount marked on the item, and left with it, not completely sure what had just happened.

When I drove by there a month later that storefront was something else entirely. He was gone.

@lauren
In the satirical fantasy Discworld novels of Terry Pratchett, the novel Soul Music mentions Wandering Shops or "tabernae vagantes". They have weird and unique wares, and when you go back they are gone.

https://wiki.lspace.org/Wandering_Shop

@nyrath @lauren

I've been rereading the discworld books, and Wandering Shops actually show up in THE LIGHT FANTASTIC — book 2 (of 40+!), and indeed I thought of that story when I read this one.

(also I assume that's why so many SF/F writers seem to have congregated at https://wandering.shop/)

The Wandering Shop

Wandering.Shop aims to have the vibe of a quality coffee shop at a busy SF&F Convention. Think tables of writers, fans and interested passers-by sharing drinks and conversation on a variety of topics.

Mastodon hosted on wandering.shop
@trochee @nyrath @lauren Ah-ha! Thanks for putting that connection together! I'd idly wondered where they got the instance name but didn't ask or search.