Peel&Play is a semi-active SMART sensory toy comprised of twenty interlocking pieces that can be peeled from the main body and rebuilt into any desired shape, which emulates the playful act of peeling an orange. The toy serves two purposes: 1)addressing self-stimulatory stimming behaviors (e.g., hand flapping, head rocking) among children with autism spectrum disorder (ASD) and related disabilities, and 2)monitoring changes in children’s development based on play therapy. Alongside the hardware with a therapeutic effect of 56.3% immediate reduction in stimming behavior, our AI-based software analyzes developmental progress through various data-driven parameters to monitor progression and regression of autism.