Just came across a really cool image list of writing systems from around the world on the Omniglot website.
From the site:
There are a number of different ways to describe writing and writing systems.
Writing systems are both functional, providing a visual way to represent language, and also symbolic, in that they represent cultures and peoples.
All writing systems use visible signs with the exception of the raised notation systems used by blind and visually impaired people, such as Braille and Moon.
Visit the image list page at Omniglot.com
Visit the "What is writing?" page on Omniglot.com