Other Uses for a water bottle!

Sun glass Case at the beach

nestled inside the container, your shades are protected by water!

You could also fill the bottle with celery and carrots for a healthy snack!

Lastly and it would take a little more work, but you could use it as a salad dressing mixer.  You mix your vinaigrette and use the spout!  a recipe:

http://www.care2.com/greenliving/12-healthy-easy-recipes-for-salad-dressing.html