How can I make extra cash online? What are the ways?

Isn't that the eternal; question?
I'd suggest trying something like selling homemade stuff on Etsy or ebay. I don't actually know if or what Etsy costs to use, so I may be making this suggestion in error (sorry!) Redbubble is an online T-shirt company that takes any design you come up with, puts it on a shirt and sells it on commission. It's nice that they do all the work and no money is taken up front. You even set the prices yourself. They do all the work and pay you when a customer pays them. These are just a couple of suggestions. I'll add more if I think of any.

Nice point. Also, it's not so difficult to create own website and become a blogger. In general, there are plenty of opportunities. I even play slots with bonus rounds sometimes. So, everything we need is patience, good luck!

You can do the dropshipping stuff as well, but I dont think you will profit from it really enough or soon.
Try seeing the websites that are looking for freelancers and see if you can offer anything