I used to collect Graham Clarke postcards and pictures, but it got to the point where there were far too many, so we gave them to a charity shop, and they all sold! I've still got a couple of favourites though...
Funnily enough, after a lifetime of collecting garden tools, I'm giving them away to the new gardeners on 'The Patch', and that'll make a nice hole in the shed!
And I've still got three hundred cassettes in the roof, which I can't bear to chuck out...