All of the above. Mine loves a mini sofa we bought for her. She has her own little living room within a living room. A bubble tower with lights is a good option too.

I may be an adult, but I am young at heart. As an infant, I was obsessed with all things Mickey Mouse. My mom told me a story: when she brought me to the thrift store, I was able to spot Mickey Mouse by only the tail. The employee checked and sure enough, there was Mickey Mouse. I still am a hard-core Mickey Mouse fan! I loved 4-inch figurines, especially Polly pockets, Disney dolls, and mini animals. I also loved key chains and still do to this day. I started reading graphic novels, Marvel comics, and manga in middle school. Around the same time, I acquired Funko Pops and continue to grow my collection. Now, as an adult, I still read graphic novels. I started collecting vintage Barbie dolls two years ago. I believe being Autistic makes people collect niche items but as long as it brings joy it is all good in my book.

I got this little stuffed dog keep for many years still have it in my ceder chest today.

Cheap McDonalds/BurgerKing toys always has been Stephen's favorite.

My daughter loved these monkeys I ordered from QVC, she was around 5 I think. They walked around & repeated back what she said in this little baby voice. She would die laughing.
I don’t know if they still have them but maybe something similar that repeats what he says.