A "sensory diet" is related to activities that a child performs through the day to help them to "modulate" their bodies. The following are examples of activities that may be included in a "sensory diet" in a home environment where specialised equipment may not be available. These activities are generally suitable for all children, however, professional advice should be obtained if you are uncertain (particularly with the vestibular system) about which activities or combination of activities to try. Consideration should also be made regarding your child's age and cognitive abilities. The activities have been categorised but also be aware that all the sensory systems are connected so one system may affect another.
There are over 100 activities here in the reference sheet. For more information refer to http://www.yourkidsot.com/blog/a-sensory-dietnothing-to-do-with-food