In these modern times, Craigslist, Ebay, and Amazon exist as wonderful ways to offload items that may contain value for someone else that no longer contain any value for you. Goodwill stores exist as great places to donate things that have become clutter that will not sell quickly. When I have children, I plan to regularly donate or sell toys that are no longer played with. The old legos will of course be added to the standard Giant Bin of Legos.