I have two boys who have been collecting Lego for close to a decade. We currently have over 10,000 pieces of Lego and there's no sign of it stopping. Over the years I've learned a thing or two about how to store Lego so my house doesn't look like it survived the Lego Apocalypse. I've used all of these things at one time or another but there are a couple thrown in I wish I had used/thought of. I'm looking at you MacGyver Mom!
If you also have some Lego-collecting-kids in your house, these are the best ways to ensure you never step on another piece ever again (followed by you yelling at your kids in that moment of agonizing pain that you are going to throw EVERY SINGLE PIECE AWAY.)