We have a local 'Reuse or Repair' page, where people offer things they were going to throw out that someone could recycle in some way. It's often things like odd rolls of wallpaper that children could draw on or use for paper mache, or yoghurt cartons for seedlings, tiles to break up for mosaics - that sort of thing. People are ingenious with their upcycling projects, and it's good to see things that would otherwise go to the tip get a new lease of life.
Once a week we can put up items to freecycle, such as an old TV, baby things, kitchen gadgets etc. The same couple of people pounce every time. They can't possibly need everything they take - everything from furniture to books to electricals, so presumably they sell them on, which is completely against the ethos of the site. Admin has tried restricting 'takes' to one a week, but that means that genuine people can miss out on things. For a while they tried asking people to message the giver, so that they could decide in private who got it, but that led to issues, too. It's really frustrating, and despite the numerous 'some people' threads, the 'takers' keep doing it, and others worry that it is they who are being talked about.