It's called Craigslist. Or Freecycle. Heck, even post on Amiga.org and see if anyone wants to come get the stuff. Just because it's no longer important or valuable to you, doesn't mean it isn't valuable to someone. 
In defense, I have found in the past times when it was impossible to GIVE stuff away, even on CL or FC. It was heartbreaking but I did have to throw some stuff out as I could no longer move it around or store it.