I haven't read your link yet, but if you have found no-one in your (extended) family interested in taking charge, I would assume that your work will go in the trash, like most other domestic accumulation. Unless perhaps you have refined it to the standard of a thesis. One of my daughters is moderately interested, so I may bequeath mine to her. As it happens, she and her mother return today from a brief visit to the north-east renewing family connections.
My parents lived to a ripe old age; both were artist types and lived in a mid-Victorian house with an attic, so you can guess what it may have been like. When Father died, Mother wanted to move on quickly, and I was lucky (and surprised) that the new owner wasn't bothered about a house clearance. I shudder to think what he thought of all that lifetime's junk
