I think this is going to be fairly transformational, at least for care scenarios.
I'm not talking about the sci-fi pipe-dream of a Star Trek Data style robot, but more like a basic humanoid robot that can reliably do mundane & basic things on-command. Like pick things up off of the floor, go fetch items from another room, open the curtains, do some basic food preparation (e.g. heat things up in a microwave levels of sophistication, or even just getting a glass of water), do the dishwasher, take out the trash and so on.
Even if it can only do 1hr of chores at a time before heading back to recharge, thats huge. It will help people live more independent lives for much longer before needing expensive care from humans (something that we have a bit of a ticking time-bomb of, at least in the UK where the population is aging rapidly). It doesn't need to be a fully fledged "robot-nurse" to be helpful.
Bonus points if it can monitor it's user(s) and call for help if there appears to be anything wrong (e.g. fallen and can't get up type monitoring), or intervene in situations before they escalate (e.g. turn the gas off if it is left on, remind to take medicines etc)
When people say that we are entering new Middle Ages, they might actually be cool.
The question is, try to spend $1bn on stuff. Go.
So then you start with big ticket items (like maybe a yacht or a house). That gets you to your first $500m. After that, stuff gets WAY "cheaper" where you just run out of things generally before even hitting $1bn.
And then at the end of it we try to imagine what it's like having stuff worth $250bn. And there's just no way to make that tangible.
I did try this with my son and he said he'd buy an A-list soccer team. But I feel that starts to get into "buying companies that make you MORE money" territory.
At a much smaller scale, it seems to be that $10mn is so much that you could live in a $2m house (good by any standard in any location), have a stable of cars, have full-time help, fly first class or even private everywhere, and vacation as much as you want. Or am I off by a lot given inflation?