I went to Girl's Camp a few years ago, and one of my leaders had some extra jeans she was getting rid of and had the idea to make pillows out of them.
She cut the legs off, and sewed them shut, leaving the top open.
She then had us put stuffing inside and sew the top shut.
I went home and sewed some fabric pieces and buttons to it, to add more personality and color.
I also sewed the top again with colored yarn. I made it my own.
It was a really fun, VERY quick project and even though I don't have a step by step picture collage of how to do it, it's pretty explanatory and easy to do.
Have fun! Enjoy!