The past nine months have been spent working from home, and it has now become clear that what I miss the most is the casual interactions with colleagues in the coffee room.
It is a place where ideas sparks, and where information flows from one scientist to the other. The importance of this liminal space should not be understated. It provides a safe space where ideas can be freely challenged and developed, owing to the generally low number of participants, the low stakes and the general mood.Over the years, I’ve developed several coffee clubs in my buildings (I’ve changed buildings three times), adding an espresso machine wherever I could (often on my own funds, though coffee beans where purchased collectively.)
Elementary Table of Coffee (Berkeley Lab building 2 coffee room, 2013-2016) (@awojdyla, Feb 4 2018)
The importance of the mood component became apparent as we switched to online meetings and we started to lack this kind of space (thankfully my colleague Diane B. organized regular coffee zooms!), though nothing replaces the in-person interaction, with a white board where people can share their thoughts.

Saul Perlmutter casting a definitive vote on the planet-ness of Pluto in our coffee room (Berkeley Lab building 2)