I got two new foster cats this past weekend. Both are young adult brown tabbies, with somewhat elongated noses. Both are painfully shy, and these are the first set of cats that I've fostered that I seriously worry about for the future.
Both will tolerate being handled, but both run when I come into the foster room. One of the two, Puma, I have yet to see outside the fabric playbox he's chosen to nest in. Nick, who has the softest fur I've ever encountered on a cat (and that is saying something) will come out only if I stay in the room for an hour or so without making any moves toward him.
This is what I'm doing now. I take my trusty Acer into the foster room with me in the mornings, and I spend until lunchtime typing, cruising the web, or talking to the cats without approaching them. Eventually Nick comes out and begins to whine and pace. There is an invisible line down the center of the room he does not cross; that side is his, this side is mine. I turned my notebook around so I could get a picture of Nick with the cam:

That's Nick, looking at me looking at him. The things hanging in the air are toys on strings that I've suspended from the ceiling. The foster room has suspended ceiling tiles, so I got a couple of cheap leashes on major discount and looped them through the tile supports. I then clip toys onto the end of the leashes to give the cats something to bat at. The piece of furniture to the left of the picture is an old computer desk that was left behind in the house when we bought it. The desk has two doors at the base that open into a large storage area. I put the litter box in there so the cats have a semi-secluded place to do their business, with the bonus that they can't kick litter all over the place.
*sigh* Nick has decided to siesta in one of the carriers I leave open for them. Puma hasn't even left his box for the last two hours. This will not be the morning that they and I make contact.