I think the "golem sneezed" event should pick a random golem, (not barnaxus), replace golem with dwarven promo, add canibalize and mutated. Its a golem that gained life! dwarven life! or maybe he was really a dwarf to start with ... hehehe I smell mad scientist ^_^
I like the hippus horse resource one ... my map alpha gives hippus the horse resources, so the only ways for other civs to gain horse resource is to either grab nearby hippi land, or to trade with the hippus [ later being a bit easier

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I have another one for the hippus. "Recently our people have been honoring a hippus champion. He has proven a fine warlord, and would prove a noble clan leader." random highlevel horse unit gains the strong promotion, (or to be more fair valor promotoin, plus a free promotion- if strong seems to OP)
Illians:-here is a two parter. More common is "a rare frost giant has appeared!" where a very passive barb unit with HN and beast unitcombat is spawned on an unimproved Ice tile. if it could not attack the Illians, but roam and perhaps kill/attack others in that enter the Illian ice, would be cool. Also, if it has a 20% chance to be captured if someone with "winterborne" promotion kills it. You could have winterborne give a 20% chance to capture frost giants.
second part is, A Frost Giant has heard the call of winter! may he unite with the Hand! prereq is the WhiteHand ritual must be completed. A random frostgiant, created by the aforementioned event, would join Illian control, become controlled by the Illian player.
Calabim: "the cattle are revolting!" calabim HAVE to have this one, its just so flavorful and cute. Anyways, a result should be some level of population being lost, and the last minute enforcer to join the map as a unit, maybe a Moroi with some niche promos, like cannibalize and unholy taint.
"two rival vampire lords are having a feud" - chance nothing happens, chance a high level barbarian vampire is created, chance a vampire under your control is created. might require feudalism as a tech prereq?
Sheiam: "The goddess of magic has showered us with gifts!" - a random high level unit gains the escape ability/spell.
"Peasants have heard enemy propaganda, and are staging a revolt!!" -X population, recieve X pyre zombies.
Lanun: "Hannah the Irin and a boat captain got into a fight!" two options, and event cannot happen to the Black Wind (since hannah admirals the black wind, ahaha) ..... first option, you side with hannah, and lose the boat. second option, hannah gets mad, and 2 barbarian krakens appear near the boat. maybe a barbarian speaker as well

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"The captain of X seaharbor has gained some renown!" high level boat of X coastal city gains valor and/or hero promotion.
Sidar: "an archivist has emerged from his hidden libraries to join the public cause" either recieve +2 beakers for library, or recieve a hunter/ranger with perfect sight promotion.
"a unit has lost control of their visibility!" random low level unit gains hidden promotion.