Most are vintage from various tag sales etc. I like having a lot of pillowcases because they are a easy way to liven up your bed. Vintage linens feel the best...I highly recommend them. I change cases often and like to mix and match- I don't think they need to match your sheets or even each other... but I'm big on coordinating them, so I stick with one color family at a time. I have three pillows on my bed, so it's usually a pair that matches and a bright funky one for my favorite pillow in the front.