Frog breeding counts, but there’s another more specific task they must do in order to finish that.  For Jade it was promise to bring the planets into the new session, we don’t know what Kanaya’s was but she said it was impossible to do. But Jade’s task seemed impossible when she excepted it so maybe that’s a prerequisite.

Redirect

She probably left them in a chest on the meteor. All the trolls were just throwing their shit in them left and right when they first arrived

time travel, they both had Aradia’s temporal music boxes

Dirk’s Cal was empty so he couldn’t have been influenced by it.  Bro possibly was tho, and he was p. awful.

Dad was a businessman
Mom was a scientist
Bro was a puppeteer/entertainer
Grandpa was an adventurer/business owner, he inherited riches
Nanna ran a joke shop
Poppop was a comdeian
Roxy’s Mom was a writer
Dirk’s bro was a film producer
Grandma ran a company that made LE inspired goods until Condy ran her out of business
Bec was doge

The frog is the universe

Debatable but most likely Combination he ran out of sopor slime pies, he stared into the eyes of Lil Cal following his angry departure at Dave mocking his religion. 

Usually they just sleep. Roxy is an unusual case. However, sometimes they can be awake without realizing it like Dave who just hung out in his drem room makin beats.

They have Conditional Immortality. They can die, but only if their death qualifies as Heroic or Just