I found an app yesterday for Daniel's new iPad, and this morning he's already used it appropriately! It's called Tap to Talk and it has albums with large, colorful pictures that you touch lightly (aka tap) and a voice says what the picture represents. This is big.
Daniel just touched "I need to go to the bathroom", so that's where he is now, and I'm off in a few to bring him back for more coffee talk.
This is great! Thanks again, Ken and Heather!