ik poll is over, but i keep coming back to this thread, so here goes my answer. i'd vote yes, but it's more complicated.
if it's something i don't have, it's either a combination of either not being able to use them, or not being useful to me, or i likely don't have it yet and i'd like to, or I don't know if that exists. however, the definition of something being "useful" to me is a bit broad. if your intent was talking about buying props for the sole sake of them being props and holding some monetary value X years from now, then im afraid you're barking up the wrong class.
i have a humble glass cabinet in my room that's full of trophies, plushies, wastelands of old keyboards, there's even 1 lego set in there, to commemorate some meaningful event i've been through, to remind myself of my achievements. thing is, i chose myself which of these items are there. these things hold more sentimental value to me, than monetary value. does that count as "material things"? not sure.
otherwise, of physical things, i guess there's a computer, which is something i use every day, but im not sure if that counts as something "materialistic". you mean something you can flex with on social media because it's "f@#! you" levels of expensive?