Ah, Genesis… where it all began. Literally. So much good (or not) stuff here. If nothing else, it is fertile ground for vivid, interesting mental images. Some of those mental images are of massive amounts of death, but yay for creation stories! Creation stories are always interesting, regardless how nonsensical they might be.
Creation: This is a big one in terms of praiseworthy things. Creating all existence is awesome! Good on ya God! There’s some wrinkles to be ironed out in terms of how and why, but creating everything is definitely a great accomplishment and everything in history depended on it. We can quibble about impressive-good being different than moral-good, but for simplicity sake, I’m counting it.
Other things I marked as “good” was promising never to kill everyone (with a flood) again (9:13-16), and two different instances of blessing Abraham (12:2-3; 17:1-8). The blessings of Abraham were entirely arbitrary on God’s part as far as I can tell, but I think they still count. I’m still not sure if promising not to murder the population in a certain way counts as properly good—one would expect not murdering everything would be the default setting for anyone, let alone a supposedly loving, all-powerful entity—but the pickings were kinda slim.