I have semi-adopted a kitten named Rebound. It's a very small version of Ben's Asscat, except it is super sweet and nauseatingly cuddly. She and another kitten were living in our basement a few months ago. I thought they were owned by someone in the building, but the other kitten has completely vanished, and this one is often found mewing outside our house, or in the back hallway. I'm not the only one in the house that feeds her or talks to her (one of the upstairs neighbors loudly mews at her, and says "Yea, yea, dinner's coming." But when I mentioned that his cat keeps sneaking into my apartment he said "My cat? I thought it was yours."
So whenever I come home from work (rarely before 1 AM), Rebound is waiting by the front door. She mews a few times, hops on to my shoulders when I lean down to pet her, and then hops onto my bed when I get to my room. There, she curls up next to the pillow, only moving to stalk me.
She now understands that she has to leave when I go to work, as I have no litterbox, and no desire to have the smell of used litterbox in my house. Originally, whenever I tried to get her to leave the apartment, I would place her outside, she would run between my legs, I would pick her up and put her further outside, she would run around my feet. Hence, Rebound.
In addition to her adorability, and cuddleness, she has the added bonus of not getting along with Divine, which means she has good taste.