How it Works. The BubuBox is a monthly service trial aimed at parents of children between 1 month and 3 years. It serves to give more informed choices to parents of children this age on products suitable to the age and development of their children. The BubuBox contains 5 baby-care products, cosmetics, toys, and food. The best products and brands more appropriate to the age and development of your baby. For children between 1 month and 3 years. All products are carefully selected by a group of experienced mothers.