In our library and on the web there are a few good resources for obtaining visuals or making your own.
Teaching by Design uses the computer and home made craft items to create visuals and make school work more visual. A CD-ROM template is included. Visual Strategies for Improving Communication: practical solutions for schools and home is a good source of practical ideas. Making Visual Supports Work at Home and in the Community (a simple book created for people with autism, but it works well for people with Down syndrome as well.)
A great website with free resources is: Visual Aids for Learning These visuals were created by Jenine and Wayne Addison whose son has Down syndrome and are excellent. They have kindly made them available for everyone and can be used for school and home and for various age group's need.
Disability Solutions also ran a couple of articles about using visuals in Issue 4 and 5 of Vol 5 by Patti McVay. Do2Learn and SET BC are other websites with useful visuals.
Let us know if you know of another great site for visuals. If you'd like to borrow any of the books on making and using visuals, just let us know.