When I traveled in the days before the internet, I mailed letters to my friends. One of those friends, and my father, both saved my letters and gave them to me upon my return.
Even though you are keeping a journal, writing a blog, calling home via VOIP and Skype, etc, I strongly recommend that you — that every traveler — sit down and pen a letter home to a family member or friend. Hand-written letters are priceless memories.