EncMstr covered it from a highlevel, I'll help specifically. The Californication (word) refers to the "we want to stay small and weird" vibe in Portland. It was another bumper sticker type sentiment in Portland when a large number of high-asset Californians were moving north. Heart in Oregon is... a bumper sticker like Keep Portland Weird. Again, hometown pride. Portlandia (TV series) is a series that both lampoons the weirdness of the city and is loved by many residents. I think these are clearly related to Keep Portland Weird, though they are lacking sufficient sources to become integrated into the prose. I'll add some text to the seealso links as suggested by MOS.