This reminds me of my failed business idea https://indivicia.com/ The problem with printed shirts is that everyone expects them to be cheap-ish. And the Printful quality is low enough that people were upset at a $50 price point. The only tshirts that sell for higher prices are branded ones, e.g. With Marvel characters on them. But then you're effectively selling copyright infringement as a service. And your profit... - Source: Hacker News / over 1 year ago

This would make for an epic GitMerch t-shirt. Just came across it recently and think it's quite cool. Source: over 2 years ago

Speaking of contributions, there are lots of ways you can celebrate your 2021 achievements. Get your contributions printed on a tshirt, hoodie, tote, or mug with GitMerch or on a poster with Commit Print. These are great ideas for Christmas gifts or if you're looking for something to spice up your home office for 2022. - Source: dev.to / over 2 years ago

Who doesn't like to go down memory lane? Affirm a software engineer of their technical and career growth with a shirt, poster, or 3D model of their GitHub contribution graph. - Source: dev.to / over 2 years ago

You can make custom designed merch using customer's data (printyourtweet, gitmerch, metee). Source: almost 3 years ago