What I do

I mainly trade options, mostly spreads, on the major US indexes (RUT, NDX, SPX) on a short-term basis – from a couple days to up to 3 weeks. I usually sell premium, but will buy vertical spreads when markets warrant a more directional bias. 

I also trade leveraged ETFs, such as TNA and TQQQ based on market timing rules. 

I like to pay attention to SKEW, Put/Call ratios, VIX and other volatility based indicators to identify the easy times to make money.