We're having our first child and my retro-gaming room is becoming the nursery and so I have had to get rid of lots and lots of stuff.
The VCR cassettes and CD/DVD-R discs went in the bin in first wave. Then my 32" 4:3 TV and a load of 14" CRT monitors went to the recycling centre
Next is the Magazine collection. Pretty much every UK Spectrum/Atari ST/Amiga magazine. They take up a huge amount of room. Pretty much all of them are now available in PDF format. I am hoping I can find someone with more room than myself who will take the lot rather than sell them one by one. Unlike my retrogaming hardware (which is moving to the attic) the magazines won't last very long up there as it is cold and slightly damp.