Become a furry!
It's more of a subculture than a hobby, but developing your own fursona and interacting with the furry community through it is a great way to kill time and make friends.
Plus, it's compatible with all the other hobbies too, because no matter what it is there's a group chat full of furries just as excited about it as you!
Nazis aren't good at symbolic thinking, that's why they hate postmodernism so much. They keep falling afoul of the reification fallacy, embarrassing themselves with their inability to distinguish signifiers from the signified and frequently confusing human inventions with facts of nature.