Put your thesis on a 5 1/4" floppy disk. Put the floppy in a floppy plastic pocket. Masking-tape the plastic pocket onto the inside of a hanging-file folder (containing the paper copy).
Leave the folder with the floppy pocket with the floppy disk in a file cabinet.
Do all this in 1985. Do not look at the folder again until 2011.
Somebody pass me a tissue. My eyes are watering here.