Yard sale, eBay, Craigslist or Goodwill?

I’m starting to cull through everything I’ve accumulated in 29 years of marriage, and 26 years in the same house, and am fighting the inclination to box everything up and put it all in storage. I have dishes, toys, furniture, craft stuff, etc. Lots of things are really, really nice—like a fur coat from my mother in law’s estate—but I will never wear or use them. How should I go about deciding what goes where? I’m overwhelmed with it all.