Unless you are independently wealthy, you may want to explore some options for temporary storage of items you plan to list on eBay or sell locally. Later on, you can invest in some sort of storage building or even may want to rent a storage unit close to you. Until then, if you have a garage or carport, you could set cases of goods on pallets, then use car covers to protect them from dust, dirt, and moisture. These could possibly even be used outside, in your backyard.
They would make it possible for you to get the items you want out easily, then cover it all back up again when you're finished. When you aren't using them, they can be neatly packed away until the next time.
