Outsourcing my personal development to the internet

[moominmolly]

Internet, I need a Goal. I don't remember the last time I learned something new and weird, or did something entirely novel to me. Ideally, I'd like something that challenges me mentally, physically, or both, and I'd like it to be something kind of unusual ("running a marathon", for example, would count, as would "learning to fly a plane" or "building something electronic" because I've never really played with wires).

What should I do?