Storage is not as hard as most people make it out to be- you have space you aren't using.

Do you have book shelves that you've got three or four inches of shelf between the front edge and the books? Put stuff behind the books.

Under the bed is the classic. Ditto under overstuffed couches and chairs. Or dressers and wardrobes.

Odd corners in the closet, maybe on either side of the door at the front, where you basically have to get into the closet to find what is in them?

My personal favorite is to use a couple of totes, Conterra foot lockers or 5 gallon buckets and a peice of plywood to make a coffee table. Put a sheet over it, and it looks like fairly normal. Put sheets over your other living room furniture and tuck them in, so everything matches.

You'd be amazed how little space two weeks of food actually takes up when all is said and done. It is water that is bulky. Store what you eat, and rotate it.