me: "hey look, something new and awesome I could use in my projects!" (WebAssembly in this case)
also me: "I HAVE NO FUCKING CLUE WHAT I WOULD USE THIS FOR"

Exactly. I have this problem all the time.

I was so dam excited for webassembly.
I have literally no idea what to do with it.

Mean, I don't write any compute intensive stuff like games so...

Suppose I could build a miner with it I guess?

Further than that, I have no idea except some simple libraries that I can use instead of the default javascript math functions... but idk if that's worth it performance wise :p