A side gig related to web development is web design. While a web developer focuses most on a website's back-end, a web designer will focus on its front-end -- the user experience. They will design the site to be attractive and also functional. Many small businesses need help with web design, and you may even be able to win some business by approaching some and offering to improve their sites.
There are quite literally hundreds of clever ways to make money online. From taking online surveys, to renting or selling your old clothes, flipping your iPhone to someone in a different country, and even buying low-cost products locally, just to resell them for a higher price on Amazon. There’s truly no shortage of unique ways to make money online.