Gift Ideas???

Hey guys, I’m not a parent but I am an older sister (21f). My parents (54m and 51f) and I have absolutely no idea what to gift my autistic brother (20m) for Christmas this year. He seems to have lost all interest in things he used to love like puzzles, movies, etc. but the hardest part is that we can't gift him an experience or a gift card, he needs something physical to open up. He has no interest in fidgets like spinners or slime, he loves art but has more than enough art supplies. If it's already this hard I don't know what the next 20 years are going to be like lol. We are just desperate. Also, he's 6ft 1in tall and is a bull in a china shop. Thanks in advanced!