At one point we had two 8 by 11” laminated peaces of paper that had everything you would need to do basic communication. I’m sure they have them somewhere on the net but can’t find them. I will try to see if I can find some around the house tonight.
One page had the ABC’s and 0-9
One page had a body, moods, pain scale, and stuff like that
The last 2 had pictures toilet, shower, chair, oven, table, food on a plate, a cup with liquid in it, clock, TV, computer, car, truck, different places, and so on.
I remember people talking to them using these. It was a lot of pointing but you could get your point crossed.
If I can find it at the house I’ll post it tonight if not I will look around on the web. This would give you a few more ideas.