While also not thrilling, pillow covers are at least a quick project, and can mix things up a bit. Our couch throw pillows started out with some Thai silk and a scrap of leopard print:
For Christmas this past year, I thought I would put some red quilted cotton to good use, and made a couple of matching pillow covers:
It literally took me 45 minutes to make the two pillows covers - less time than going to the store and picking them out, probably! I put in zippers, but even the most beginning sewist could make an envelope back cover.