I like Freecycle. It's an online community to share unwanted stuff. Clear out your junk by offering it to other people. Check the list to see if someone else is offering something you want. It's got enough of a critical mass, that there's now a chapter for the borough of Lambeth, with about 250 postings a week.
I've had a coffee table and a bed from Freecycle, and I've passed on lots of computer bits, a desk and a greenhouse. On Monday, I got four volumes of a fantasy comic that was hugely popular in the 1980s. Elfquest is in the style of Tolkien - or closer to Andre Norton - and comic fans used to rave about it.
It's coming up fresh 25 years on. It's a big hit with Kitty, who's reading through it as fast as ever she can, with excited reports on the characters' doings: "Cutter and Leeta have children!"