Great list! I have another to consider that I personally have 35+ years experience providing. Clean up litter outside commercial properties on foot using inexpensive hand tools. It’s almost as easy to do as going for a walk! I started doing this as a side gig in 1981 and soon grew it into a profitable full-time business. I share my experience in my book, Cleanlots.
Freelance writing is such a great industry to get involved in if you want to work remotely. There’s plenty of work available and it’s typically one of the most flexible gigs in terms of scheduling. (You can often do the work whenever and wherever you choose.) Even better, it’s pretty easy to get started with a degree or previous writing experience. Read more at Freelance Writing Jobs for Beginners
The money is most certainly in the list. If you're at all interested in online marketing, setup email software and create a lead magnet that you can use in your sales funnel. Then, build up that list. It's often said that you can expect to earn about $1 per subscriber per month. If you have a list of 10,000 subscribers, that means you can earn roughly around $10,000 per month. You will need to deliver value and not pitch them on every email, but it is a very achievable goal in a short period.
If you’re crafty (and I mean that in more than one way, wink wink), you’ll enjoy Etsy. Handcrafted items are the bread and butter here. Plenty of people make decent side money on the site, which is basically an EBay for crafters and artists. Set up a sellers account with Etsy, and you’ll be asked to set up your virtual storefront and put up at least 5 goods for sale.
Manage social media for businesses. If you have a knack for social media, you could potentially get paid to manage various platforms for others. Many businesses are too busy running day-to-day operations to stay on top of their Facebook, Twitter, and Pinterest accounts – and will pay someone with the knowledge and time to do it for them. To find these jobs, ask local businesses and check sites like UpWork.com and Problogger.net.
Whether you have a website or are still dreaming up ideas for a blog, you can also look into affiliate marketing. With affiliate marketing, you partner with brands and businesses within the content of your website. If you mention a product or service, you link to that produce or service using a unique affiliate code you received when you signed up for that particular affiliate program. From there, you’ll make money any time someone buys a product or service through your link.