We recently got a new couch and decided to cover some pillows to make it a little more comfortable. I bought two pillow forms from IKEA and decided to make some envelope pillow covers. Envelope pillow covers are my favorite - they fit well, look great, and sew up very quickly. :D
This is super easy and should take about a half hour per envelope pillow cover once you get into the swing of things.
Plus, these envelope pillow covers are washable! Yay!