I personally think your best bet is just investing in BTC itself.
That is already risky enough and with that you are betting on the whole BTC community.
It's already fancy enough.
Yes, sure I know and I am invested. But there are some interesting startups anyway which I'd like to support and maybe earn a buck on the way..
I am speaking of this specifically
https://bitcointalk.org/index.php?topic=289730.0