I would watch out when using the plastic storage drawers, last time I looked I was going to grab a couple but they seemed to be covered in static electricity, not sure if the plastic or the store.
I'm currently using some old boxes that I got from a grocery store, just some old Apple boxes and stuff as they're sturdy and I can fit full length cards in them, most motherboards will fit as well. At the moment I have a closet with most of the stuff stacked in it as the closet is always dry, is a fairly constant temperature due to the house heating\cooling and I don't trip over stuff. The one downside is when you have to dig for stuff in the box, but that's never bothered me too much.