Disclosure: This blog entry contains referral links and/or codes. This means that I get a commission if you decide to sign up through my links or using my codes, at no cost to you. This helps pay for my running costs. Please read my affiliate and referral disclosure for more information. When I was looking for a side hustle, I came across print-on-demand merch. I looked at some t-shirt designs and feel that I can do it too. I started selling my designs on TeePublic and Redbubble in September 2017. My first sale of two stickers only came in March 2018. The sale only made me US$1.50 but there is no cost on my side. To date, I have made US$1,909.85 (S$2,529.57). For the past few months, I have been making about US$50 a month on average. If you are interested in graphic design, this is one of the side hustles that can provide you with some income. The only input you need is your time and creativity...