They do make just an opening and you can really pick it up anywhere. Metra makes a kit for it, it's there Universal Kit, and I think the part number is something like 88-00-9000. In my '98 I hooked up two LED's to the dimmer switch, I've seen people who cut a piece of ABS plastic and covered up the hole, also put the Ford Oval on it.
They also make a Double DIN opening for the Radio like the 01-04 have. You can probably get one from a Junk yard from a later New Edge and directly put it in. You might need a little modification however such as two screw holes to mount the radio behind the trim.
If you're feeling creative and have the ingenuity you could always fasten something up, like another cup holder or secret compartment.