I have another to add to your list that’s almost as easy to do as going for a daily walk! Clean up litter outside commercial properties for property management companies. The work is done on foot using simple hand tools. I started this as a side gig in 1981 and grew it into a profitable full-time business that I continue to operate today. I share my experience in my book, Cleanlots, and offer free support.
Take it seriously. Yes, you’re applying for an online job. Yes, you can do the work in your underwear, but that doesn’t mean it’s not a “real job”. You must treat it as such or they aren’t going to treat you as a serious candidate. You aren’t the only one who wants to work in their underwear. In fact, the competition online is likely higher than it is in your local area.