1. Simple and intuitive: The user interface should be simple and intuitive, allowing children to easily understand and operate the device without a lot of instructions.
2. Large buttons: Use large and clearly marked buttons to accommodate children's small hands.
3. Colorful: Bright colors and playful designs can make the walkie talkie more attractive to children.
4. Durability: The interface and overall design should be sturdy enough to withstand rough handling by children.
5. Safety features: Make sure the device is child-safe, has no small parts that could cause choking, and uses non-toxic materials.