I had two twin, midget kittens for less than a month.
After about a month of visiting them at ARF, the ARF people finally let us take them home (they refuse to allow pets to be bought around Christmas time, because many people buy pets, then give them back after realizing they can't take care of them). I had warned my mother a month beforehand that since she was allergic to many things, among them dust and dogs, that she should go check if she was allergic to cats.
Fast-forward about three weeks, and she's telling us that she's giving the cats back because she can't take her allergies anymore, and not to be mad at her for it.
I'm no expert, but I'm pretty sure I have every **** right to be mad at her, especially considering she didn't even TRY to look into medication or vitamins to fix it (some people just lack certain vitamins, which can lead to their immune system acting up, thus they have allergies). She's the parent so I don't get to show I'm mad in the slightest. I can't even say, "I told you you should have checked if you had cat allergies", or, "Why don't you TRY to find a way to fix it before just giving them back?"
The ARF people told us they lick your eyelashes when you're in REM at night. So yeah, they were both really cute. Both had stunted growth, and weren't even a year old yet. I'll upload pictures if I can.
EDIT: Because they're so small, they love to just sit on your shoulder while you walk around. Just don't lift your arm too high.