Having a hamper where you generally throw your clothes will help keep you clothes off the floor. Get a cute decorative one so you can leave it out and easily accessible
Vertical space is often overlooked. When you do not have a lot of room then going up and using as much wall space as you can is a great way to maximize your storage.
Baskets.. oh I love baskets. I use them to keep so many things under control. You can use them to store in closets, bookcases, under coffee tables. The possibilities are endless.
Kitchen Drawer Organizer
These are essential in my kitchen! I really do not enjoy cooking that much and when I have to dig around for something I need in the heat of dinner I get really frustrated. Keeping drawers organized are really help.