The typical cognitive assessments that are used for children require them to be able to use their hands to point to pictures or hold puzzle pieces.
Many of our products today have accessibility supports in them to the extent where we don't have to purchase anything else. It's already in there. Your phone, your tablet, your smart home devices. If you're going to look for these features on your devices, you can start in your settings. There should be something in there that says accessibility. Go in there, see what's available. The manufacturers have done a really nice job of describing these features right within the settings to give you a sense of what they're going to do.
For a child with CP learning to move, the really important things to remember are that the child should always be active.
Upper limb therapies and interventions have been well studied in cerebral palsy. Different interventions that have good evidence are Constraint Induced Movement Therapy (CIMT) and Bimanual Therapy. CIMT has been shown to be successful in children with hemiplegic cerebral palsy (CP). CIMT uses a splint to physically constrain the uninvolved arm and encourage them to use the more involved or affected arm.