I'm dyspraxic and autistic. (Amusingly, when the occupational health department rang up before I started my current research job, they said, "It says here that you have dyspraxia and Asperger's Syndrome, is that right?" And when I agreed, they went, "You'll be another academic, then. What do you need me to do?") Lately I've been thinking about the specific challenges I faced during my PhD and how I could use my experience to help PhD candidates with similar learning differences to get past their own hurdles.
Once a month I offer up to five hours' practical support in areas where I'm strong (proofreading, structuring written work, designing ethnographic and arts-based fieldwork, developing interviewing skills, etc.) to a PhD student who has a particular issue they need help with and who is struggling to get suitable support.