Throw it all out. You aren't going to use those 256MB hard drives, or the 1MB SIMMs, or that ISA SCSI card that only works with the HP SCSI scanner that only works with that card.
If you live in the SF Bay Area, there's always the Computer Recycling Center, with drop-off points in Santa Clara, San Francisco, and Petaluma. Yes, they will take those cables and cards, and maybe in the end someone will be able to make use of them (donation list).
(Although I have a hunch they don't really want my S-100 bus backplane and video card.)
Nothing makes a person more productive than the last minute.