We set up two long tables and covered them in brown paper for the kids to draw a backdrop on for them to read the book in front of and to use in the book as backgrounds. The kids weren't super into it. I think they like having their separate things, which is interesting to note.
I tried to do some music stuff with the kids but only some were interested. I wrote three different kinds of notes on the board (clap, tap and rest in musical notation) and they did it with me.