Heyo. My thoughts:
1) Mining/Staking/Masternodes
2) Airdrops/Bounties
3) Shorting w/ leverage
4) Arbitrage
5)...
6) MacDonalds
Anything else?
I like your last option

But seriously, it seems to me that now is not the best time for speculation. It is better to keep everything in Fiat until the market starts to grow.