I made some cushion covers as Christmas gifts this year.
Four sets of three cushions were based off an idea I saw on a blog (although I can't remember which one - I more saw the picture and made my own version).
The other set of three cushions was based off an idea I think I saw on craftgossip, and pinned to my gift ideas pinterest page:
Mine are a little different, but I'm very happy with the results. The cushions have a zipper on the back, with a large flap hiding it.