Toys for children in primary education

I am a university student studying Product Design. For my project, I am designing a toy for autistic children in primary education to improve their social and communication skills.

I would like it to be a two or more player toy so it improves these skills. Please can parents or support workers give me advice or ideas on what toys you think would be beneficial for children. E.g. What would you like the toys to have? What kind of games would they like? (board games, construction toys, music, drawing, etc.) Thank you for your help.