I've got an intern to help me conduct some experiments that would demand too much time from me otherwise, and started to go to the office more often than before.
The nice side effect of going to the office is that I get to workout more (commuting by bike) and to conduct more side projects with colleagues. I keep choosing at least one day in the week to work from home, though.
Interestingly enough, there is a coffee shop right next door and yet I never worked from there. Sipping a coffee without bringing work with me has been pleasant so far, but maybe it is worth trying to find for how many hours I will be able to stay there focused on business related activities.