The truth is, most of this clutter will never be used again. It will be sorted though by our grieving children.
To spare them the trouble, try posting the items on eBay. Do some research on your parts first though. Find out how much it was worth new, and what it's worth now. It is helpful to find out what the part fits and incorporate that into the listing to widen the number of potential buyers. unlike newspaper sales, and local classifieds, there isn't the option of being low-balled. You can set the minimum amount you would take for the part, and repost until it is met.