I've been thinking about what could be next highly priced items
Maybe an Art of the first commercial transaction that made btc well known till today.... The Pizza BTC art could be made in a dynamic way
As time goes on, people will always spend good amount of money for something they have passion for or can identify their passion with. You and I can actually put up a nice painting of Bitcoin logo that can be eye capturing with all the aesthetics, and we decide to auction it online for people to bid for it, don't be surprised we will see somebody that will be ready to spend a fortune just to get that piece of artwork in his house.
So far so good, in the little knowledge I have gathered, I don't think this is just about attraction, remember that I have said it earlier that the rich thinks differently from an average person, so in this case, is either they sees opportunities that we aren't seeing right now or they just want to flex their financial muscle just to show off, and in doing so, they are very much confident that they wouldn't run loss, because if they feel it's no longer beneficial to them, they just sell it off to another guy crazy fellow, just to recover back their money.
And another thing that we just need to know is that the rich mostly care of their happiness, not how much they are actually spending, because having money is just a normal thing to them, so they don't rate money that much the way an average person does, so in essence of all this is that they are either doing it for their happiness, ego or they sees opportunities that we are not seeing now, so it definitely boils down to any of these.