I believe everything exists.

[Ervin]

First of all I must say that I might not know what I am talking about.

With things or as you say non things like magic I think you can say that they are concepts and exist as such.

So magic is not real, its a concept and because people give it power by practising it or tyring to disprove it it exists as such.

With space it exists, its all mater, I think I heard someone sasy that antimater is also mater.

Time is I believ a concept, not mater, it exists because we have invented it and we measure it by clocks, so clocks exist as mater but not time.

On the other hand Budhists say that the true nature of everything is emptines. If there aare any Budhists I would invite them to explain their concept of emptines.

Thanks