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Graphic design
I've done graphic design since 2011 and I sucked at it at first. But the thing with GFX and other creative fields is that it's very easy to pick up and learn. If you just put your mind into it you can learn the basics very quick and start doing basic jobs on forums. Set up a portfolio with some of your work and price accordingly. You will earn low when you start... hell, you'll be doing stuff for free just for the sake of it. But eventually if you just put your mind into anything you'll get regular clients. I remember my first regular client being a Youtuber that needed simple 2D graphics for his Shopify shop. I sucked at graphics back then too, I did my stuff with GIMP and picked Photoshop later. He even paid me well and I did improve a lot during this. On 2016 he even sent me a $100 BTC Christmas bonus which I'll never forget. You can also sell on sites like Fiverr and even combine it with other methods.
You can use Fiverr to your advantage and promote your SMMA (Social Media Marketing Agency) or Web Developing services using a simple funnel strategy. You can either do everything yourself if you're qualified, or you can outsource everything.
Good ol' reselling
Go to look for grails at local thrift stores. You can either buy a booth at a thrift shop or sell clothes/items online at sites like Grailed/Depop/Etsy. Try to avoid the big chains such as Goodwill and Salvation army since the independently owned ones are the most profitable. This takes practice to know what clothing will and won't sell, but a friend of mine makes GOOD money out of this while maintaining a part time job. This is could be considered semi-passive because once you get the clothes, you just wait until someone buys online. Good things to look for are brand clotches, shoes, calculators, electronic items, vinyl players and other items that are in.