I got rid of a lot of stuff by putting on the internet as "free" (a bathroom suite, a window, a kitchen sink unit and a radiator). Mine were picked up really quickly, but I saw that a lot similar items had been languishing for weeks. I think the difference was that those items were out of focus pictures taken from one angle, of dirty and badly lit items and without precise dimensions.
I put up clear pictures (with a suite of furniture I would up up front, back and side pictures) of the the cleaned-up items, with honest descriptions (the bath panel was damaged) along with height, width and length of each items. I think I got rid of the lot (and they were collection only) in less than 48 hours.
So in short it could be worth you putting your items on the internet again, with improved pictures and descriptions.
Oh and in case anybody is wondering how you take a picture of a clear window, you close the curtains and take the picture from the outside