I do signauture campaign + many social media campaigns (more than 50) (facebook+twitter+instagram). It takes me more than 2 hours a day 7/7. It's an hard work and in 2017 it paid well, now payment is very low compared to last year
Actual rewards are at least 50% lower than 2017 but some campaigns is still good (reward more than 400$ in social media campaigns). However finding successful project is the real problem...
You can take a look at ICOBENCH or other similar websites but it's necessary to make your own analysis because if not rare that these websites analysis are superficial and not accurate.