I save draft sheets so I can learn from my mistakes. It was fun looking at my picks at the end of the season and I would like to do that annually then be able to compare the different types of strategies I employed.
I also keep the final standings just so I can shove them in the faces of those guys who always seem, a few years later, to make their team out to be better than the standing showed.
You could just make a fantasy baseball folder on your computer then make a folder for each year and break those folders into subcategories. That is what I do