I've gotten 2 houses that have stood out to me the most Renee the chef rhino and Marcel the clown dog. Their design suggestions were both very odd.

Renee asked for a "vacant lot, like the one she played in in her youth" and Marcel wanted a "zen garden bathroom"

Which got me questioning how the hell do they come up with these ideas.

My personal headcanon is now that they just put themes in one hat and possible reasons in a second hat. Then they'll either draw one from each for something like Renee or two from the theme hat like with Marcel.

I assume their more ridiculous ones go something like this

Guy 1 "We have Marcel the clown dog. His house will beeee" reaches into theme hat "a bathroom" reaches in again "in a zen garden, nice."

Guy 2 " He's a clown though, shouldn't his theme be like a circus or somethi..." *gets cut off by guy 1

Guy 1 "No the hats have spoken, toilet in a garden"