I bought a bunch of those "space Bags" that you put all your off-season clothes & such in, then suck out all the air with your vaccuum cleaner...
It actually works great to save space, but they don't tell you that each packed & sucked bag weighs a TON...and you have to store them flat & VERY carefully, so nothing punctures the plastic to let air in...
AND, you have to make sure that whatever you put in there is VERY clean....