You know, I don't know! Normally good SF like this kicks my mind and imagination into overdrive. But I'm drawing a complete blank. In an economy where everything necessary to life and pursuing happiness is inexpensive to free, what do you buy for fun? I'd be after old books for sure, but I'm like Seamus and his friends, a product of an older era. (sort of, roughly) What would attract Nichole or even Ventura? Heck, what's Ma-Bo been wasting jinke on?
I think I'll wander through a few stores this weekend and imagine what would still be in a store a century from now. For example, inkwells and sanders (sprinkle on paper to blot ink) are sure gone from normal stocks. In one hundred years where will paper and pens be sold, if anywhere?
If I call it research maybe I can con a grant somewhere.