DO IT YOURSELF ENTRY --- PURPOSE: To keep crayons, drinks, and other items within reach of a wheelchair user. The add on tray shown was custom built of 3/8-ply to slide over the standard wheelchair tray. Multiple compartments allow her to keep crayon colors and other small items organized and hold drinks. TITLE: The Add-On Tray. WEB SITE: Workshop Solutions at http://www.workshopsolutions.com/COMPLETE/ad_on_tray.htm. REF: The originator, Tom Jeary, can be contacted at email@example.com.