You are really unlikely to get massive rewards just by having Ethereum, so got to work around with looking at other options too. That is really ONLY way to gain on consistently. I have many Ethereum but at the same time, I like to keep myself with other Cryptos which make the rewards going. Right now, I have invested on DFS ICO and just for 1 Ethereum, I received 5,000 DFS tokens, which is amazing. It got the potential to make me rich overnight.