I had 3 pillowcases all cut out and pinned together over the weekend. Last night I finished one and got another partially sewn. All 3 have a theme of bugs and butterflies. And all 3 of them are on my UFO list for guild and my PHD (projects half done) list for The Pin Cushion.
I use a "tube" process and French seams so there are no raw edges and no hand stitching. Just Google "pillowcase tube method" and you'll find all kinds of videos and patterns.