Designing indoor toys for kids

Designing indoor toys seems bit confusing for me. If someone has any example of the structure, kindly request to comment it here just for a reference. Thanks in advance.

Indoor toys aren’t necessarily technology-based, or video games; but that encourage creative play, imagination, and physical activity.Indoor toys can be
wooden toys, board games , drum/ music-making instruments, train sets,construction toys etc.Below shows one of the examples for an indoor toy.