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.
Here is the link you were looking for
https://bitcointalk.org/index.php?topic=4886322.msg44016466#msg44016466This company has dozens of working products, which generate revenue of more than $57M per year.
Also, Kamagames has more than half a million active users every day. Its token sale had just started so check the link to get more info.