This is a pre-made book that you can literally print on regular letter paper, cut out the middle, put some book rings in, and you've got a low tech eye gaze system. Complete with letters for spelling (in order of letter frequency, to reduce page flipping), the some of the most common core vocabulary words on the first page, and then categories to allow for navigation to less common words, spelling, and numbers.
To reduce need for page flipping, this book has a two step system. The user looks at the corner with the word that they want, and then they look at the color that matches the color of the border. That way you can quickly and easily see what they want. There's an example how to use a two step color eye gaze system (albeit with a board instead of a book) here: https://www.youtube.com/watch?v=EYYY4aibGBk
A lot of eye gaze is intended for people who can read and spell, but the nice thing about this is that there are pictures to go with each word to non-readers who are still have sufficient intelligence to understand the system (which you need in order to understand the two step selection).
For color blind users, I'd recommend switching the color circles to shapes, and putting a tiny shape in each box so that you can do selections that way.
If you're looking for a book without photos, by the way, and some more flexibility for fully literate users, I would recommend using Speakbook, which is a free print out with blanks that you can write in. http://www.speakbook.org/downloads/
If you want a board instead of a book, this is a great, equally complex board, that also has pictures, I think this one is a pretty great one, and also free: https://drive.google.com/file/d/0B-DbpOEDLLAEXzhFS0M2NU1aY1U/view
NOTE: to keep this free and from going over the 10 page limit, I had to delete the pages with numbers and letters. If your user can spell or you want to work on writing, you can get it in my whole bundle of 47+ products here, along with a product inspired by PODD also good for folks with motor disabilities if you want to try that too: https://www.teacherspayteachers.com/Product/Everything-this-SLP-Made-in-One-Year-AAC-Artic-Language-Behavior-3094768
Or, of course, you can just pop it in Microsoft Paint and make your own letters and numbers pages, or comment with your email and I'll sent it to you. :)