A base model iPad + Apple Pencil 1 offsets about $400 in MSRP. A more decent setup would be iPad Air + Apple Pencil 2 for $650. And of course there are a ton of software that helps prototyping or organizing ideas collaboratively, online.
If any company actually cares about collaboration, they should give every employee a set of these. They cost a fraction of a developer's work laptop and are negligible compared to their salary. There is hardly anything that can't be done online.
But of course companies are not going to do that. They are going to instead ask you to drive one hour to the office and pay for the gas on your own money, then write on whiteboard in real buildings so that the money wasted on the lease is worth something.
And I say this as someone who invested a lot of time and political capital trying to find good (and within constraints) virtual whiteboard solutions.