When volatility falls to a low level Bollinger Bands are narriwing as you can see on the chart below. This is called the Squeeze. Usually periods of low volatility are followed by periods of high volatility. Narrow bands can foreshadow a significant move either up or down. Since VIX is already on low level this move most likely will be a move higher.
I put in a couple of trades recently and I'll show them in my virtual trading account. One of them is a VIX call option with September expiration. It didn't make as much money I thought it would but it still has some potentials. I also bought a GLD straddle. I am not too happy with that, I'll sell it. I expected a bigger move, but it still made some money. The best one is a SPY put with October expiration. I will definitely keep this one for a little longer.