Nanopresso (another Wacaco travel brewer). I'm only in the office two days a week so I couldn't justify a full office coffee setup. I grind enough for two shots in the morning (I have the 'barista kit' with two larger baskets) and I can pack everything neatly into the Nanopresso.

Fellow Aussie here. Not sure where you are, but here in Melbourne I've found a few specialty cafes that serve a deconstructed long black... basically an espresso with a small cup of hot water on the side, so you can experiment with how much you want to dilute it.