I have been designing resources for many years as I worked with preschool and primary age youngsters with delayed or impaired speech and language skills. The resources using symbols are free. My latest resources which I have illustrated are extra tasks based on Marion Blank's Language Levels (previous ones have been free). They can be used with groups of mixed language ability and are reasonably priced.
Symbols (c) Widgit Software 2010. A large file for clear photos in two parts. (The alternative single Smaller MATCH file will take less time to download but the photos are not quite as sharp.) Print 2-up single-sided on A4 card. One page of suggestions for working on matching with severely delayed children. One page on how to move on and/or work with other more able children, possibly in a mixed ability group. 11 common objects are shown as photos and symbols in two sizes.