Best cat ever was a runaway we sheltered for a night, most chill cat ever.
His mentality:
"You're gonna sit down? Mind if I sit next to you? No? Great. Hrm, I think I'll just put my head on your lap and purr, is that alright? Sweet. Oh, you're getting up? Cool, I'll be here when you get back, ready to purr some more."
He was awesome...unfortunately we found the owners and returned him...only to find him standing in front of our door AGAIN the next day. We should have kept him then but I felt bad and returned him yet again (they had lots of big dogs that didn't like him).