Assistive technology offers infants and toddlers with disabilities a set of tools to assist in achieving developmental goals while interacting with objects, materials, adults, and other children in their environment. This article focuses on assistive technology devices that can promote young children's participation in activities and routines in everyday settings and offers strategies on how to infuse assistive technology and augmentative and alternative communication systems within natural routines for young children. A discussion of best practices in early intervention with specific ways to make infants' and toddlers' play activities accessible through the use of assistive technology, computers, and switches is provided.