He likes to have everything in place. He has specific places for certain items. He lets his family use the items, they just have to ask before hand, otherwise, he'll go crazy looking for it-
If he goes to the mall and they stop by the pet store to get some food or treats, he'll always look at the birds, snakes and some of the other animals as well, they seem to like him.
Any time he has horrible anxiety, he doodles in his notebook. So between pages of...the horrors, there'll be random doodles.
He likes puzzles. He finds them very entertaining and will work on them for hours on end.
Anytime someone has a cup on the edge of the table/counter, he'll politely. If they don't/they do it again, he just grabs it and moves it. After that, he doesn't care-
He has a lot of sticky notes.
That's all I have! Sorry if these aren't the best and I'm very sorry for the late answer. Have a good day!! :3