In short period of time it's very difficult. Trading or investing in some ICO, but there are high risks.
Trading in ICO is proven good as long as that ICO is listed in yobit, know why? Buy ico and wait for the release then sell it. See how the bot buy the coin and you will get your profit maybe 50% of what you currently invested. I once did this and it is successful 4 out of 4 ICO i bought. This is no an advertisement because I use to have signature campaign of Yobit but there is really what will happen.