Iron on transfer sheets are available at most craft stores. I actually bought mine at a office supply store.
Then I chose my images. For mine, I went on a parks and recreation website and downloaded actual photographs of fish we would find in our area. Mr. Cabin was thrilled that I picked the right fish! I just chose "iron on" on the paper type selection menu of my printer menu.
Here is the pillow before. It was a bargain at $4.oo!
To apply the images, just follow the directions on the transfers. I was a little hesitant about the fluffiness of the pillow and being able to press down hard enough with the iron but it worked fine.
The finished product. I still might add a rustic button or something to the middle. Yes, I can sew a button.
This was so easy I am already starting to think of different ones to make.