Can you name a single thing that isn't a thing

Can you name a single thing that isn't a thing.

an object cannot be in a set and not be in the same set...

my gf

Nothing

Nothing is still a thing, since you conceptualize it as something. So nothing is really something. Unless you mean nothing that is beyond the word nothing. In that case it's an absence of something, but as such still a concept and therefore still something.

Yes.

Magic.

concept is not a thing

a concept is a certain configuration of your brain's neural network... is that not a material thing?

milhouse being a meme