Re-listen to them all one last time before pulling the plug, then will them to someone you think might appreciate them. Or at least someone who understands their value and is in a position to sell them.
I have loads of high quality hobby stuff, tools, etc as well as my own art, which I really hate the idea of it just being thrown out, even though it has zero monetary value. I'm going to leave it to a cousin who shares a few of my interests, and just hope they like what they see. If not, well, I won't be here to know any better.