I would be interested in hearing about other hobbies / interests / past times / etc have decent subreddits (beyond programming / hacking). My current obsession

I would be interested in hearing about other hobbies / interests / past times / etc have decent subreddits (beyond programming / hacking). My current obsession is skydiving and r/skydiving is a pretty good discussion forum and link aggregator for the topic. My previous obsession was starcraft 2 and r/starcraft was very interesting to me. I've juggled for years and occasionally swing by r/juggling and tend to find interesting tid bits.