It's just a content site about the keto diet. It runs in the background and earns money from Google AdSense and Amazon Affiliate links, the latter of which are dwindling because I haven't had time to fix dead product links. It's a plain static site, so it doesn't need any server maintenance or software upgrades.
Not totally passive because I actively tried to grow it for three months when I had to cancel my main business due to COVID.[0]
Jan: $786.71
Feb: $682.62
Mar: $362.28 (Amazon slashes affiliate payouts + drop in traffic due to COVID)
Apr: $220.48
May: $221.53
Jun: $180.66
Jul: $369.91
Aug: $486.22
Sep: $362.18
Oct: $510.86
Nov: $431.52
Total: $4,614.97
If you're interested in the details, I write retrospectives every month sharing stats and thinking through strategy.[1]