Check out this and share your stories and resources!
PECs is:
“The Picture Exchange Communication System (PECS) is an augmentative communication system developed to help individuals quickly acquire a functional means of communication (Bondy and Frost, 1994). PECS is appropriate for individuals who do not use speech or who may speak with limited effectiveness: those who have articulation or motor planning difficulties, limited communicative partners, lack of initiative in communication, etc.”- http://www.polyxo.com/visualsupport/pecs.html
(a good intro to PECs)