Most were a while ago (hence the complacent part), but I made a hosting panel (those were popular little over 10 years ago) and sold that (made well over 100k$ in a few months), hosting company hosting millions of sites/apps, a proprietary CMS company, a company that sold games related stuff, a dating site, a PoS system+hardware and a bunch more things. They were all side projects at the time besides the CMS company (which managed to get to 400 staff before I sold) and all ran almost automatically after the onramp efforts. Also, and this seems a weirdo thing here on HN, if I had partners/co-founders (and with most I did), for almost all of these goes that I have never seen or even voice talked with them. I did not know them before, we met online and just assumed trust. We made good money just over text chat. And that's how I ran the CMS Corp as well (as cofounder/cto). I want to do that again in 2022.