I think Ethereum and Litecoin are worth buying for early investing. Ethereum and Litecoin can easily converted to Fiat money as well as to Bitcoin or vice-versa by using Coinbase. And by this ability of this alt coins you can never lose a chance to earn in your investments. When you bought ETH or LiteC you can now purchase some ICOs and other bockchain operate coins which you desire to support their project. Know your risk also. Its a must to know where your money going to spendof and the potential ofa coin as well.