Have you tried rebus chants in your early literacy programs? I present programs for 4,5 and 6 year old children. I use a variety of materials and have had considerable success with rebus chants. The chants are usually poems where several words are replaced with pictures. They are great for emergent readers because there is frequently repeated, predictable text. The young child does not have to decode all the words – the rebus pictures fill-in-the-blanks.
There are many sources of rebus chants. This is one that I created