My family has a tradition of doing an ornament exchange every year. All of the adults (my parents and siblings) draw names and get an ornament for the person whose name they drew, then the kids all draw names and get ornaments for that person. This year between all of us we ended up with 3 girls we had to do something for ranging in age from 5 to 16. One of them likes owls and the color purple so I had the idea to make a her a purple owl ornament. Once I had it done I thought, why not just make a couple more for the other girls.
I ended up with 3 little owls one in shades of purple, one in shades of pink and one in teal and mint.
To make it easy I just cut the faces out of felt and glued them on. Then I added a little string to hang them by. They were pretty quick to make and I thought they turned out cute. If you don't want to make them in bright colors you could use shades of brown or even make one all white to look like a snowy owl. That would be fun as part of a Harry Potter themed tree.
You can find the free pattern for the Colorful Owl Ornaments on the Fairfield World site.