My own software business makes Photoshop plug-ins. I doubt that has much intrinsic value, but I'm proud of what my customers have used them for. One customer

My own software business makes Photoshop plug-ins. I doubt that has much intrinsic value, but I'm proud of what my customers have used them for. One customer runs an Etsy store selling t-shirts of Pugs wearing plaid, designed with my software. It's extremely niche, but makes her super happy & she earns more than I'd ever expect from it. Another customer runs a drug rehab program, and for those who complete the program, they get a free portrait photo shoot to see a before/after comparison of themselves, a visual reminder of what their life looks like away from drug addiction. I've also given free copies of my software to youth art programs, though that's practically free for me to do anyway. I put some of my revenue/income towards charitable projects, but I keep much of that private / anonymous. My general philosophy on that comes from two of my favorite books, "Banker To The Poor" by Muhammad Yunus (of Grameen Bank) and "The Billionaire Who Wasn't: How Chuck Feeney Secretly Made and Gave Away a Fortune" by Conor O'Clery.