I made a pillow from a t-shirt and fabric scraps, strung together in a string type quilty manner. I added a zipper so the cover can be washed (here's a great video on how to easily add a zipper to a pillow).
Here' what it looked like flat - I added simple wavy quilt lines, which are super easy and fun to sew:
Here's the front:
And the back, which I think turned out really cool:
Next up: finish a t-shirt quilt. Then another t-shirt quilt. Then maybe finish two other projects...