Here's a good example of something that I would use:
http://toxic.magnesium.net/~heather/pics/zelda_window_022402_big.jpgI'd crop off kitties tail end, and then place this inside a border to frame the cat. At that point, I'd paste this inside a smaller window in the secondary hull somewhere, and someone onboard has a kitty that likes to watch stars go by.
(edit: decided to show this a bit more indepth, and explain it more.. visually.
There's two elements I want to show in the domestic homey window texture I'm creating.. a cat, and a bedroom that is Trek.
So I went onto Google Images and searched "cat" "window" and then "Trek" "bedroom". Found the above image, and this one: (saw the full details on this on Home&GardenTV, this is a guy's apartment in England)
http://www.coolhunting.com/images/24thcid_bedroom.jpgI then started on the two, selecting around the cat first to crop down to just what I needed (window_tutorial00001.jpg), and cropped it to the frame and cat. I selected most of the garden, and inverted it to select everything else. Brought down the brightness about 25 or so, and then re-inverted it to select the garden (the part I want to replace). It's now ready for the background I want.
Now, on the bedroom shot, I very roughly select an area that I want to show, including up to the edge of where the cat *would* be. I copy that, and go to my pre-selected cat photo, and paste into it's selected area. Resulting in the final shot (cat_in_trek_window.jpg).
It's now ready to put into a window frame on a texture.