Simple symbols needed for Free AAC program for Charity

We are attempting to create a FREE AAC (Augmentative Alternative Communication) for paralized children and adults with stroke and disability who will use this to communicate with. These people, including stroke and CP ( Cerebral palsy) need this desperately and cannot communicate without it. They often need symbols - Really simple symbols - that assist them in understanding and finding words. I need really simple but consistently designed symbols designed and named according to the list in the PDF file. There are just over 7000, but most are duplicates that just need to be renamed. A lot are just simple things like arrows and stick figures. You may use any royalty free images if you can find and rename them, but they must have a consistent look I need them in 650x650 pixel transparent PNG's, and we would also like the vector files if possible, which we intend to publish for free open source use so that the comunity can use them and contribute improvements We will give recognition to the designer that did these when we release this aac. Its a chance to do some good in the world and get paid for it and recognised. So bid low and do a good job In the zip file attached you will find the word list and a few examples of the symbols we require.