DJ, whoa, I am so sorry for your losses. I've been away and didn't know.
I'd think there are a number of agencies (e.g., Goodwill, The Kidney Foundation) that could assist you. Maybe they'd be willing to come out and take out all of the things you're ready to part with, and it's a win-win-win situation: a charity gets something, you get to know that you're giving something worthwhile to an agency/people that need it, and you honor their memory in the process by doing something noble.