I run a business working with Autistic children and am a filmmaker/producer as well. Gotta go with functional business attire...
Ken Cole all the way baby! Reaction gear is the answer to all my problems, from head to toe. Always look nice, sporty, and definately fashionable!
If I have to work with a kid directly, I will often wear a velour sweat suit (Sean John, yes diddy) as this works in the park, in the car, in the city, or even the club or most restaurants on the Coasts. The only time I wouldnt wear that is during a pitch or in a meeting.