One of my friends once referred to the "homieocracy" in which you don't
immediately turn to paid services when you need something, but sometimes you
trade services and skills with your friends!

Things I might be able to help you with are:
- Large scale web infrastructure
- Linux security
- Building keyboards
- Proof reading technical documentation and runbooks
- Getting angry about social media
- Line-for-line recreation of scenes in the movie Hackers when the streaming
  server goes down
- Peep Show quotes for all occasions

I've probably forgotten a bunch of things that are actually useful to other
people because I'm not other people.