With current environmental legislation preventing a lot of simple throwing away of old electronic components and equipment it can often be costly to dispose of, requiring licensed waste disposal contractors and so on.
However, if the components or equipment is still in a perfectly usable condition - for example an old slow laptop/pc/monitor - or perhaps you have found some non ROSH components at the back of the stores. There are still people that will reuse these without costing you a penny.
How?