I've written an article on the many shows that Tim Crouch has made that are for or involve children. It's here:
Rebellato, Dan. 'Nobody Really Wants To Be Here: Tim Crouch's Work for Children.' In Tim Crouch ou la scène émancipée, edited by Élisabeth Angel-Perez, et al. Coup de Théâtre. Paris: RADAC, 2016, pp. 89-108.
The essay talks about the way that his work for children is every bit as experimental as his work for adults and that, in some ways, he debuts some of his more radical ideas with children before he tries them out on adults.