One of my most favorite stamp sets is "Spencer's Set" from The Project Bin. It is a stamp set that embodies autism (with the puzzle heart) but also is versatile enough to use for non-autism types of things as well.
The Dr. Seuss quote on this card also makes me smile (it's in Spencer's Set, too) - "Why fit in when you were born to stand out." I fussy cut one f the puzzle pieces and popped it up at an angle from the heart to represent the "standing out" in the quote.
You can see more photos/information about my card, plus a photo of my son Brock who is autistic on my blog...