Einstein was big on letter-writing, as his estate, a veritable trove of handwritten letters, demonstrates. Especially in the throes of a passion upset by distance, Einstein would carve aside time for himself to express in the written word his love.
Einstein was an avid reader, and kept a library up until his death. He not only read constantly classics, modern and antique, of literature and philosophy, but he also read his collaborators' and friends' published and unpublished works.
As much as Einstein traveled through spacetime theoretically, he also did it in the flesh. He traveled throughout Western Europe, to the Far and Near East, and then finally settling down in America. He loved meeting new friends and integrating new ideas into his worldview.
Truth be told, by most accounts we know that Einstein was a dedicated, rigorous and often unstinting worker. In fact, you could say he was always on the job of solving new problems and cracking new theories. And if you love what you do, you'll never work another day in your life.
Einstein was often separated from his children and family, sometimes of his own design, sometimes not. This grieved him greatly, as he loved playing with kids, his own and others. He was a great teacher, and included them in his music lessons and offering his insights.