I had so many piled up over the last two years, that I just cleaned them out of my office, and stacked them all up in the hall. We live in Southern California, so we don't generally have attics or basements. I've never sold any of my Nikon gear, so I'm not exactly sure why I'm even keeping them. That said, I can't for the life of me, find any of my old Nikon SB-800 stuff, except for the flash itself. No box, no accessories, no nada.
While cleaning my office last week, I did finally bring myself to throw out all those pretty B+W lens shade boxes.