A company a friend of mine works for does something like this. You have a desk, at your desk is a laptop, monitor, keyboard and mouse. Your desk is yours to personalize and it's in an open area. Want a quiet room? There's a few dedicated working rooms for individuals or small teams, grab your laptop and move there. Work in an office but want the collaborativeness for a bit? Grab your laptop and move to one of the unused desks.

Sure, it involves investing in a space with lots of extra room, but they have been very successful in it so far for the last 5 or so years.