Lost in a daze

Wow, my Halloween coma lasted over a week!  Everything is finally put away now so I'm feeling better about that.  It's a daunting task to wrap and pack all of the usual holiday goodies and then to find space for the new goodies that were aquired. 

Now my basement storage area looks like this:

As you can see I'm fond of Sterilite containers.

How about yours?  How do you store your out of season items and how much space do you allocate before you have to start purging?