Raspberry Pi Robotics Kit Development

I'm looking for a skilled professional to help me create an educational robotics kit using Raspberry Pi. This kit will primarily serve as a tool for teaching students about robotics, programming and engineering.

Features of the kit include:
- Obstacle avoidance: The robot should be able to detect and navigate around obstacles.
- Line following: The robot should be able to follow a designated path.
- Facial recognition: The robot should have the capability to recognize faces.
- Voice module: The robot should be able to respond to voice commands.
- Screen display: The robot should have a screen for displaying information or interacting with users.

Ideal candidates will have:
- Extensive experience with Raspberry Pi.
- Strong knowledge in robotics.
- Previous experience in creating educational tools.
- Skills in programming and software development, particularly in Python.
- Ability to design engaging and intuitive interfaces for the robot’s screen.

I am open to suggestions and ideas to enhance the kit's functionality. Please include examples of similar projects you have completed in your proposal.