Actually i can say that i have it but letter bit because recently, i have done investment and got lose, than i hold my bitcoins because i think it is a save way, and when price increase than definitely i will sell it, So you can call it my passive income, but otherwise i have not and also i don't know these ways where we can get passive income.
what kind of investment? you can't say you really invest into such specific things if it was a ponzi scheme or just an MLM,definitely can't say it's a legit investment since it was made to scam people,go try out another investment like lending on poloniex or whatever legit