Toys can be found from expeditions in the wasteland and are stored in toy boxes.
Playing toys raises less tireness than reading books or training, in addition it requires less materials to construct. If you play strategy in which one kid stays in the shelter for long, the Trauma and Stress level rises, toys will do him/her good.
A single toy values 20 so it worths to keep several ones to gain benefits on trading.
Toys provide stress relief for children, they cannot be used by adults, much like with books for adults, playing with toys will also increase the child's charisma, intelligence and perception, so even with no stress, finding time for a child to play with toys is worth it.