Well, I remember folks talking about 4" PVC pipes, and either burying them, or leave a few inches sticking up so that it looks like sprinkler system-related items.

How about those shelves in the garage that raise/lower and hold plastic bins?
http://www.homedepot.com/webapp/wcs/stor...amp;R=100464807

I noticed in my car that the back seats had "holes" in the foam. not much space,just a good idea:does your furniture have dead space behind the upholstry, behind the cushions, that could be filled in?

"coffee" tables or end tables on 5-gal buckets, or storage containers. Cover with tablecloths. Of coures, when your friends find you out, that could be a touch awkward.