I will raise you with a Dell Chromebook, designed for eight year old kids, totally bulletproof and able to take anything thrown at it, with a seemingly super-long-range battery that outlasts anything.

It is practically a Panasonic 'toughbook' and it also has a homing ability, in that you can lend it out to people with a fair expectation that it will come back one day.

At home it might as well be a 'home data centre', with a full LAMP stack, serving web pages to the world, just fine.

I am not sure if it really has things like a CPU and RAM inside it, maybe there is just a team of four cockroaches hyper-threading away.

I am really not sure about the graphics, it can drive 4K external and its own somewhat indestructible screen just fine, albeit not for gaming.

The keyboard works great, albeit simplified Chromebook style, as does the trackpad. The keyboard is practically machine-washable, you can spill tea, coffee, water, ice cream, mild PVA glue solution in it with no long-term consequences.

Purchased refurbished, many aeons ago, I forget the price, but it certainly wasn't three digits, even allowing for inflation.

I am playing up the strengths of this lame Chromebook from yesteryear, however, such a device could be made today, to survive the Zombie Apocalypse just fine. As a ThinkPad I am sure that such a product exists, but you probably need £4000 for it rather than £400.