It is a very good idea but you need to read a lot prior to investing in anything, as there are many profitable projects out there but, at the same time, there are many holes in which you might fall and lose all your money. Thus, I'd recommend you my portfolio, as I am currently satisfied. Check it out:
1. Cointed
2. Giftz
3. ATF
4. Restart Energy
5. Knowledge
Check them out. All of these ICO's are promising and provide high ROI. Additionally, their whitepapers and companies vouch for their credibility. Let me know if you have any questions.
Like said before, with the bitcoin price going down nonstop, it is the right time to redirect your investments to alt coins and ICOs. The list above is really solid. Except for number 5, all the other ones are great ones, in special 1,2 and 3.
But you should slowly and carefully do your research before putting any money into anything. I can say from my own experience that some ICOs seems like a perfect asset and in no time it crumbles to nothing, so be smart!