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.
Become financially literate: Before you start investing, you must financially educate yourself. The financial industry wants to sell you thousands of different products, on which they’re making money in the end, not you. If you don’t understand 1,000 % in what kind of a product you’re investing your money, you’re probably going to lose it. So, if you want to get rich, you must understand financial products, taxes, legal aspects and other investment issues really well.