Things and stuff
The difficulty, then, in writing about the ways we interact with the things we make (and what effect those things have on us in turn) is that sometimes we can be specific (i.e., what effect does a soccer ball have on the people who interact with it) but sometimes we have to be general, and general discussion of things is hard.
I'm thinking about this so much, of course, because this is effectively the problem I'm going to encounter when I start on my dissertation, because I think the way we interact with things is fascinating, and because I think the way we interact with pretend things (like, say, in literature and language) is even more fascinating -- how the physical impacts us when we aren't dealing with the physical anymore. And I haven't figured it out yet, but I'm working on it. It's a thing. :)