This may sounds weird but how do i dispose a hundred kilogram worth of sketchbook with sentimental value?

Unexpected circumstances happened in my life that needs me to be moving again, i have accumulated too many sketchbook. Can i like, just buried it or something? Throwing this out feel weird, like wrong for some reason. It feels like i relegate the task to someone else…

This sketchbook may be filled with amateurish borderline lewd stuff, but i did it. But now i have to say goodbye to it. I carry them everywhere once, but not anymore i cant.