I should point out that I also have a sizeable box full of crap, the pages of which are only worth the heat of their combustion. Maybe 10 novel-sized manuscripts in size, but certainly not structure.
Haha! I hear you. If I'd kept everything I'd written over the years, I'm sure I could fill a small room with it. And honestly, some of it probably wasn't half bad, but it's too late now. I like to think that everything we write plays some role in the story we finally get onto the page and out into the world. Of course, that's coming from someone who has never finished any of the projects I've started. To give you an idea, I was just reading a blog about writing, and the blogger linked to a book from which she got her outlining method. When I clicked on the link, it took me to the Amazon page, and lo and behold, I'd already bought the book....SEVEN YEARS AGO. That was kind of freaky. To realize that seven years ago I was doing exactly what I am now. I honestly don't remember purchasing the book, but thanks to the magic of the Kindle cloud, I was able to open it up and start reading. It's amazingly insightful. I'm actually at a point with my current project that the information in the book is helpful! With any luck, seven years from NOW I'll actually have a finished book...a published one if I'm really lucky!
But, I wanted you to know that I did a brain dump this morning. It was like beating my head against a wall at first, and none of the lovely imagery and such that you have in yours. What it did do was unlock some information about my MC, and the plot unfolded a great deal more because of that. I feel like something shook loose and fell into place. So...yay! Thanks for the inspiration/motivation to do that!