Although there are many good ideas out there, aren't you safer to invest in an ICO which already has a functioning and proven product? ROI is much more likely in this scenario
If you find an ICO which can offer its product then send here the link, I think that you will find many investors.
ICOs with product is not for small investors, good example is Telegram ICO.
Our Exchange opened at 20-August, we hit more than 5000 users just in one week.
Signup and trade, you will be interested.