If you're looking for an easy way to get your yoga mats off the floor, consider an over-the-door towel rack ($34). This is similar to mat storage at yoga studios, but because it is hanging from your door, it won't take up extra space. Hanging your yoga mats is also a great way to help them dry quickly after giving them a scrub . . . you are giving them a scrub, right?
Even if you have a dishwasher, some things can't go in the washer (like wood or Caphalon pots & pans), so you need a place for it to dry. Something simple and small enough not to take up too much counter space. Advantage Full Dish Rack