I've made 5 sets of pillow cases since last fall. The things are ridiculously easy to make, yet look really sharp. There's no top-stitching to worry about getting perfectly lined up with the seams, and all of the raw edges of fabric are encased. I used this tutorial from Little Birdie Secrets. The only modification I made was to use french seams on the side and bottom of the pillowcase so that no raw edges are exposed.
These are the pillowcases that I made for the bed in Isaac's room. They're a little girly, but that's because they're really for me and not for him. He won't be using the bed for quite a while. I might make him his own quilt and pillowcases when he's ready for the big-kid bed. The blocks in this quilt were hand-pieced by my grandpa's sister, the quilt top was assembled by my grandma, and my grandpa made the headboard. I come from a talented family!
A set of hedgehog pillowcases I made for my sister, as a thank-you for designing Isaac's birth announcement (with a cute cartoon hedgehog!).