Even a single 1060 should net you around 20-25Mh/s. Might be worth doing for a small and passive income?
My rig is designed for 6 Founder's Edition 1070 GTX cards. Due to PSU shortages, I currently have it running with only 4 of the 6 cards. After some tweaks, I'm averaging around 120-130Mh/s which should net roughly 1.5-1.7 ETH coins per month.
That's pretty sweet, how much did the rig cost you in total tho?