Use the buddy system. Years ago I had a work-friend, we'd just book meetings with each other a couple of times a week, go to a meeting room and just hang out, I taught him to juggle, or we'd watch an episode from a series etc.

It was fun feeling like we got away with something, but realistically nobody questioned it because we both got our work done and it was a good company where that mattered more than time spent at a desk.