Tactile Symbols: Work well for students who are totally blind to have a physical object to represent meaning and well as students with visual impairment (can be made high contrast). All of these objects came from Party City. The trick is to be consistent with the objects you use to represent words.
Core and Important Words
High Contrast Symbols: Excellent for working with students with low vision. I like to use the Communication Template 4 grid from Boardmaker due to the large size of the symbols. High contrast PCS symbols are included in Boardmaker Online's subscription at no extra charge. The downside is that the symbols suck up a lot of ink making them expensive to create.
To make the communication binder I inserted yellow paper into sheet protectors to contrast the black background of the symbols and put them in a 5x7 binder.
I made these particular symbols bilingual and sent a binder home with the student as well since she is bilingual and her family only speaks Spanish.
A much cheaper option for creating symbols is to use the black and white option in Boardmaker Online and print the symbols off on high contrast or brightly colored paper or card stock. This is ideal when creating symbols that will not get a lot of use. An example of such symbols would be this set I created to go with News-2-You's article on Apollo 11. This method also works well for creating worksheets.