Cerebra is a charity for neurologically related conditions, this includes autism and ADHD.
Cerebra will create a personal portfolio for your child for free, plus a cd with it on. The portfolio is also sometimes called a passport or personal profile, is a colourful reader-friendly book designed to help anyone with communication problems tell others about themselves. It is useful when going for respite, having hospital visits, starting a new school and meeting people for the first time or For example joining a new club. Cerebra creates it with information and photos that you provide and that your child can also contribute to. The examples look outstanding!
For more information see their webpage where you can also download and print it yourself if you want.