Yarn Storage

If you are a knitter like me, you are always looking for functional and creative ways to store your yarn stash. My yarn supply is enormous and it tends to take over the house if I let it. We bought a great storage unit at Lowe's last Spring and it has been a lifesaver! The only problem is that I have stuffed each basket full and I now need another one. The photo doesn't show all the mounds of yarn on the floor in the office or in the living room
: )
How do you store your yarn?