/r/ofcoursethisexists
This should be no surprise to you.
Oh my God, there really is a blahblah for everyblah.
RULES: Please don't post things that are horrifyingly disgusting and/or strange. The point is more to find niche subreddits that actually make sense, you just wouldn't have thought of on your own. /r/drunkorakid is what inspired this subreddit and it's a good example of the type of thing to post here.
BASICALLY:
DO: Post actually interesting things that exist because they should.
DON'T: Post ridiculous porn/gore/etc. We know those things exist, we don't want to see them. No illegal content.
Any posts of stuff posted more for shock value than anything else (like rule 34 content or bestiality or grotesque violence) will be gone as soon as we can remove it. We want fun things here, not things that make me want to cry.
This is supposed to be a fun, jovial place - keep it that way.
ADDITIONAL NOTE: Please feel free to promote your own content here. Did you create a new subreddit that everyone else should know exists? Did you write a blog post about something strange? That kind of content is welcome here. Please do not downvote someone for self-promotion here because if the content fits, we don't care whether OP is promoting their own stuff or not.
/r/ofcoursethisexists
I got banned from r/neverbrokeabone because I posted that I broke a bone when I was three.