Been lots of talk over time about randomizing things… Figured I’d post a hopefully complete recollection of what I’ve heard float by so far…
Random books, random t-shirts/hats (slogans or images), random posters/graffiti or flyers for bands/events, random street names, randomly assembled horrors (monsters), random store names, random zomb versions of local personalities (weathermen, police chiefs, mayors etc), [from here I’m searching randomized/randomly on entire forums for results…] random structure damage, randomized item rarity/quality (probably goes against some future crafting plans though this could be used on zombie qualities, like emaciated zombie, ragged zombie, muscular zombie, mangled zombie, feeble crippled tall obese etc, that would modify their speeds, strengths and weaknesses)…
All my favorite parts of DF involve randomization like this, and once implemented it goes on and on and keeps spitting out hilarious or ominous results. Its one of those things that gets people rushing to the forums to brag (or be mortified) because they found an amazing bit of random goodness, or to at least suddenly laugh out loud at 1am because you found a cooking book called The Difficult Meat or a band poster advertising a performance by The Reproductive Grandmothers 
Any other ideas on things that could be randomized? I’ll apply the Care Bear Stare to any dev that undertakes any one of these!! (Just googled Care Bear Stare to make sure it means what I thought, and urbandictionary defines it as: “The often intimidating gaze of undivided lust issued by a gay man towards his prey.”, so yeah, it means what I wanted it to 