I store mine along with most of my countertop appliances including my stuffer on a iron and granite shelf in my kitchen and kitchen eating area. Theres probably no way I would get away with it if I was married. In Southwest Florida I prefer to keep things in climate control due to the humidity.
I have a 1hp, number 22. I keep it in a heavy duty tote from Home Depot with all my supplies. I live in Florida too so it stays on my back porch which is all glassed in and has a/c. Anything that stays outside will eventually rust down here.
I keep mine in the shop. I bought a cheap steel cart that it rides on with wrapping plastic, paper, and plastic tubs. I picked up a grill cover to keep everything clean when it's not in use and roll it out when needed. My grinder is pretty heavy so it's not fun to lug about.